/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 0.1.25-72570d3 [2020-08-22 22:19:33,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 22:19:33,185 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 22:19:33,221 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 22:19:33,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 22:19:33,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 22:19:33,253 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 22:19:33,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 22:19:33,259 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 22:19:33,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 22:19:33,264 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 22:19:33,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 22:19:33,274 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 22:19:33,275 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 22:19:33,277 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 22:19:33,277 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 22:19:33,291 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 22:19:33,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 22:19:33,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 22:19:33,312 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 22:19:33,313 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 22:19:33,332 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 22:19:33,332 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 22:19:33,335 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 22:19:33,336 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 22:19:33,336 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 22:19:33,336 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 22:19:33,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 22:19:33,337 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 22:19:33,337 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 22:19:33,337 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 22:19:33,338 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 22:19:33,339 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 22:19:33,339 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 22:19:33,339 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 22:19:33,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 22:19:33,340 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 22:19:33,340 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 22:19:33,340 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 22:19:33,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 22:19:33,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 22:19:33,341 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 22:19:33,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 22:19:33,342 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 [2020-08-22 22:19:33,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 22:19:33,716 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 22:19:33,720 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 22:19:33,722 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 22:19:33,723 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 22:19:33,724 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test24-1.c [2020-08-22 22:19:33,798 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9a68695d/33b8395a85d04f079904c071e4fbfb02/FLAG546ae0d4a [2020-08-22 22:19:34,292 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 22:19:34,293 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test24-1.c [2020-08-22 22:19:34,303 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9a68695d/33b8395a85d04f079904c071e4fbfb02/FLAG546ae0d4a [2020-08-22 22:19:34,646 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9a68695d/33b8395a85d04f079904c071e4fbfb02 [2020-08-22 22:19:34,659 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 22:19:34,661 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 22:19:34,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 22:19:34,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 22:19:34,667 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 22:19:34,668 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:19:34" (1/1) ... [2020-08-22 22:19:34,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fd2c704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:19:34, skipping insertion in model container [2020-08-22 22:19:34,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:19:34" (1/1) ... [2020-08-22 22:19:34,681 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 22:19:34,702 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 22:19:34,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:19:34,895 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 22:19:34,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:19:34,930 INFO L208 MainTranslator]: Completed translation [2020-08-22 22:19:34,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:19:34 WrapperNode [2020-08-22 22:19:34,931 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 22:19:34,932 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 22:19:34,932 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 22:19:34,932 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 22:19:35,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:19:34" (1/1) ... [2020-08-22 22:19:35,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:19:34" (1/1) ... [2020-08-22 22:19:35,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:19:34" (1/1) ... [2020-08-22 22:19:35,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:19:34" (1/1) ... [2020-08-22 22:19:35,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:19:34" (1/1) ... [2020-08-22 22:19:35,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:19:34" (1/1) ... [2020-08-22 22:19:35,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:19:34" (1/1) ... [2020-08-22 22:19:35,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 22:19:35,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 22:19:35,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 22:19:35,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 22:19:35,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:19:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 22:19:35,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 22:19:35,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 22:19:35,149 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-08-22 22:19:35,149 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 22:19:35,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 22:19:35,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 22:19:35,150 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-22 22:19:35,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 22:19:35,150 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 22:19:35,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 22:19:35,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 22:19:35,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 22:19:35,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 22:19:35,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 22:19:35,428 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 22:19:35,429 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 22:19:35,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:19:35 BoogieIcfgContainer [2020-08-22 22:19:35,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 22:19:35,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 22:19:35,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 22:19:35,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 22:19:35,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 10:19:34" (1/3) ... [2020-08-22 22:19:35,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c457a56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:19:35, skipping insertion in model container [2020-08-22 22:19:35,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:19:34" (2/3) ... [2020-08-22 22:19:35,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c457a56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:19:35, skipping insertion in model container [2020-08-22 22:19:35,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:19:35" (3/3) ... [2020-08-22 22:19:35,481 INFO L109 eAbstractionObserver]: Analyzing ICFG test24-1.c [2020-08-22 22:19:35,506 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 22:19:35,516 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 22:19:35,542 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 22:19:35,567 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 22:19:35,567 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 22:19:35,567 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 22:19:35,568 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 22:19:35,568 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 22:19:35,568 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 22:19:35,569 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 22:19:35,569 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 22:19:35,584 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-08-22 22:19:35,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-22 22:19:35,597 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:19:35,598 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] [2020-08-22 22:19:35,599 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:19:35,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:19:35,605 INFO L82 PathProgramCache]: Analyzing trace with hash 606292035, now seen corresponding path program 1 times [2020-08-22 22:19:35,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:19:35,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817178624] [2020-08-22 22:19:35,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:19:35,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:35,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:19:35,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:35,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 22:19:35,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:35,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:19:35,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817178624] [2020-08-22 22:19:35,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:19:35,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 22:19:35,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385901460] [2020-08-22 22:19:35,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 22:19:35,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:19:35,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 22:19:35,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 22:19:35,886 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 3 states. [2020-08-22 22:19:36,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:19:36,074 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2020-08-22 22:19:36,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 22:19:36,076 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-08-22 22:19:36,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:19:36,090 INFO L225 Difference]: With dead ends: 73 [2020-08-22 22:19:36,090 INFO L226 Difference]: Without dead ends: 41 [2020-08-22 22:19:36,095 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 [2020-08-22 22:19:36,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-08-22 22:19:36,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-08-22 22:19:36,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-08-22 22:19:36,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-08-22 22:19:36,153 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 34 [2020-08-22 22:19:36,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:19:36,154 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-08-22 22:19:36,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 22:19:36,155 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-08-22 22:19:36,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-22 22:19:36,156 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:19:36,157 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] [2020-08-22 22:19:36,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 22:19:36,158 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:19:36,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:19:36,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1986388344, now seen corresponding path program 1 times [2020-08-22 22:19:36,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:19:36,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865077664] [2020-08-22 22:19:36,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:19:36,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:36,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:19:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:36,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-22 22:19:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:36,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:19:36,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [865077664] [2020-08-22 22:19:36,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:19:36,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 22:19:36,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544514860] [2020-08-22 22:19:36,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 22:19:36,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:19:36,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 22:19:36,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-08-22 22:19:36,468 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 9 states. [2020-08-22 22:19:36,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:19:36,947 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2020-08-22 22:19:36,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 22:19:36,948 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2020-08-22 22:19:36,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:19:36,950 INFO L225 Difference]: With dead ends: 60 [2020-08-22 22:19:36,950 INFO L226 Difference]: Without dead ends: 46 [2020-08-22 22:19:36,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-08-22 22:19:36,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-08-22 22:19:36,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2020-08-22 22:19:36,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-22 22:19:36,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2020-08-22 22:19:36,967 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 36 [2020-08-22 22:19:36,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:19:36,967 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2020-08-22 22:19:36,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 22:19:36,968 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2020-08-22 22:19:36,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-08-22 22:19:36,969 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:19:36,970 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] [2020-08-22 22:19:36,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 22:19:36,970 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:19:36,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:19:36,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1471095088, now seen corresponding path program 1 times [2020-08-22 22:19:36,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:19:36,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [637272994] [2020-08-22 22:19:36,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:19:37,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:37,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:19:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:37,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 22:19:37,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:19:37,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:19:37,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [637272994] [2020-08-22 22:19:37,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:19:37,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-22 22:19:37,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531934144] [2020-08-22 22:19:37,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 22:19:37,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:19:37,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 22:19:37,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-08-22 22:19:37,544 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 15 states. [2020-08-22 22:19:38,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:19:38,242 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2020-08-22 22:19:38,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-22 22:19:38,242 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 42 [2020-08-22 22:19:38,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:19:38,243 INFO L225 Difference]: With dead ends: 43 [2020-08-22 22:19:38,243 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 22:19:38,245 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 [2020-08-22 22:19:38,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 22:19:38,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 22:19:38,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 22:19:38,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 22:19:38,246 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2020-08-22 22:19:38,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:19:38,247 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 22:19:38,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 22:19:38,247 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 22:19:38,247 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 22:19:38,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 22:19:38,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 22:19:38,849 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 22:19:38,850 INFO L271 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-08-22 22:19:38,850 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 22:19:38,850 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|)) [2020-08-22 22:19:38,851 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-08-22 22:19:38,851 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-08-22 22:19:38,851 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 22:19:38,851 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 22:19:38,851 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-08-22 22:19:38,852 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))) [2020-08-22 22:19:38,852 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))) [2020-08-22 22:19:38,852 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))) [2020-08-22 22:19:38,853 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 14 38) the Hoare annotation is: true [2020-08-22 22:19:38,853 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)) [2020-08-22 22:19:38,853 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)) [2020-08-22 22:19:38,853 INFO L264 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |main_~#ad1~0.offset| 0) [2020-08-22 22:19:38,853 INFO L264 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: (= |main_~#ad1~0.offset| 0) [2020-08-22 22:19:38,854 INFO L264 CegarLoopResult]: At program point L19-2(line 19) the Hoare annotation is: (= |main_~#ad1~0.offset| 0) [2020-08-22 22:19:38,854 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (= |main_~#ad1~0.offset| 0) [2020-08-22 22:19:38,854 INFO L271 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: true [2020-08-22 22:19:38,854 INFO L271 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: true [2020-08-22 22:19:38,854 INFO L264 CegarLoopResult]: At program point L16-3(line 16) the Hoare annotation is: false [2020-08-22 22:19:38,854 INFO L264 CegarLoopResult]: At program point L16-4(line 16) the Hoare annotation is: false [2020-08-22 22:19:38,855 INFO L264 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: false [2020-08-22 22:19:38,855 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))) [2020-08-22 22:19:38,855 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))) [2020-08-22 22:19:38,856 INFO L264 CegarLoopResult]: At program point L29-2(line 29) the Hoare annotation is: false [2020-08-22 22:19:38,856 INFO L271 CegarLoopResult]: At program point L29-3(line 29) the Hoare annotation is: true [2020-08-22 22:19:38,856 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))) [2020-08-22 22:19:38,856 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))) [2020-08-22 22:19:38,857 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))) [2020-08-22 22:19:38,857 INFO L264 CegarLoopResult]: At program point L21(lines 21 32) the Hoare annotation is: (= |main_~#ad1~0.offset| 0) [2020-08-22 22:19:38,857 INFO L271 CegarLoopResult]: At program point L21-2(lines 21 32) the Hoare annotation is: true [2020-08-22 22:19:38,857 INFO L264 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (= |main_~#ad1~0.offset| 0) [2020-08-22 22:19:38,857 INFO L264 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: (= |main_~#ad1~0.offset| 0) [2020-08-22 22:19:38,858 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 14 38) the Hoare annotation is: true [2020-08-22 22:19:38,858 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 36) the Hoare annotation is: false [2020-08-22 22:19:38,858 INFO L264 CegarLoopResult]: At program point L30(lines 15 38) the Hoare annotation is: false [2020-08-22 22:19:38,858 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 14 38) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-08-22 22:19:38,859 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)))) [2020-08-22 22:19:38,859 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))) [2020-08-22 22:19:38,859 INFO L264 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (= |main_~#ad1~0.offset| 0) [2020-08-22 22:19:38,860 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))) [2020-08-22 22:19:38,860 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))) [2020-08-22 22:19:38,860 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))) [2020-08-22 22:19:38,860 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 9 12) the Hoare annotation is: true [2020-08-22 22:19:38,860 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)) [2020-08-22 22:19:38,861 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)) [2020-08-22 22:19:38,861 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|)) [2020-08-22 22:19:38,861 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))) [2020-08-22 22:19:38,861 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)) [2020-08-22 22:19:38,862 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)) [2020-08-22 22:19:38,889 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-22 22:19:38,890 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-22 22:19:38,890 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-22 22:19:38,891 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-22 22:19:38,899 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-22 22:19:38,900 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-22 22:19:38,901 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-22 22:19:38,901 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-22 22:19:38,910 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-22 22:19:38,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 10:19:38 BoogieIcfgContainer [2020-08-22 22:19:38,913 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 22:19:38,918 INFO L168 Benchmark]: Toolchain (without parser) took 4254.96 ms. Allocated memory was 142.6 MB in the beginning and 245.4 MB in the end (delta: 102.8 MB). Free memory was 105.4 MB in the beginning and 188.4 MB in the end (delta: -83.0 MB). Peak memory consumption was 102.4 MB. Max. memory is 7.1 GB. [2020-08-22 22:19:38,919 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 142.6 MB. Free memory was 123.9 MB in the beginning and 123.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 22:19:38,920 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.29 ms. Allocated memory is still 142.6 MB. Free memory was 105.2 MB in the beginning and 95.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-08-22 22:19:38,921 INFO L168 Benchmark]: Boogie Preprocessor took 141.18 ms. Allocated memory was 142.6 MB in the beginning and 205.0 MB in the end (delta: 62.4 MB). Free memory was 95.0 MB in the beginning and 182.3 MB in the end (delta: -87.3 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2020-08-22 22:19:38,922 INFO L168 Benchmark]: RCFGBuilder took 382.91 ms. Allocated memory is still 205.0 MB. Free memory was 182.3 MB in the beginning and 165.8 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. [2020-08-22 22:19:38,923 INFO L168 Benchmark]: TraceAbstraction took 3455.55 ms. Allocated memory was 205.0 MB in the beginning and 245.4 MB in the end (delta: 40.4 MB). Free memory was 165.2 MB in the beginning and 188.4 MB in the end (delta: -23.2 MB). Peak memory consumption was 99.8 MB. Max. memory is 7.1 GB. [2020-08-22 22:19:38,927 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 142.6 MB. Free memory was 123.9 MB in the beginning and 123.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 269.29 ms. Allocated memory is still 142.6 MB. Free memory was 105.2 MB in the beginning and 95.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 141.18 ms. Allocated memory was 142.6 MB in the beginning and 205.0 MB in the end (delta: 62.4 MB). Free memory was 95.0 MB in the beginning and 182.3 MB in the end (delta: -87.3 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 382.91 ms. Allocated memory is still 205.0 MB. Free memory was 182.3 MB in the beginning and 165.8 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3455.55 ms. Allocated memory was 205.0 MB in the beginning and 245.4 MB in the end (delta: 40.4 MB). Free memory was 165.2 MB in the beginning and 188.4 MB in the end (delta: -23.2 MB). Peak memory consumption was 99.8 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 [2020-08-22 22:19:38,938 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-22 22:19:38,938 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-22 22:19:38,938 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-22 22:19:38,939 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-22 22:19:38,940 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-22 22:19:38,940 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-22 22:19:38,940 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-22 22:19:38,940 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 [2020-08-22 22:19:38,941 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-22 22:19:38,942 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: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 105 SDtfs, 90 SDslu, 249 SDs, 0 SdLazy, 367 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s 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, 0.0s 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...