/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 0.2.0-7d8eed3 [2020-11-07 05:16:55,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 05:16:55,421 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 05:16:55,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 05:16:55,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 05:16:55,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 05:16:55,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 05:16:55,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 05:16:55,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 05:16:55,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 05:16:55,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 05:16:55,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 05:16:55,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 05:16:55,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 05:16:55,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 05:16:55,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 05:16:55,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 05:16:55,522 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 05:16:55,523 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 05:16:55,524 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 05:16:55,526 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 05:16:55,539 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 05:16:55,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 05:16:55,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 05:16:55,541 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 05:16:55,541 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 05:16:55,542 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 05:16:55,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 05:16:55,542 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 05:16:55,542 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 05:16:55,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 05:16:55,543 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 05:16:55,543 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 05:16:55,543 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 05:16:55,544 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 05:16:55,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 05:16:55,544 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 05:16:55,545 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 05:16:55,545 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 05:16:55,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 05:16:55,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 05:16:55,546 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 05:16:55,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 05:16:55,546 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 05:16:55,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 05:16:55,984 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 05:16:55,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 05:16:55,991 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 05:16:55,992 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 05:16:55,993 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test24-1.c [2020-11-07 05:16:56,076 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/548816a41/ffe2867264b7439fb55e5b52124756c1/FLAGc160fc227 [2020-11-07 05:16:56,732 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 05:16:56,732 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test24-1.c [2020-11-07 05:16:56,739 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/548816a41/ffe2867264b7439fb55e5b52124756c1/FLAGc160fc227 [2020-11-07 05:16:56,755 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/548816a41/ffe2867264b7439fb55e5b52124756c1 [2020-11-07 05:16:56,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 05:16:56,765 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 05:16:56,766 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 05:16:56,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 05:16:56,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 05:16:56,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:16:56" (1/1) ... [2020-11-07 05:16:56,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4266cd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:56, skipping insertion in model container [2020-11-07 05:16:56,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:16:56" (1/1) ... [2020-11-07 05:16:56,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 05:16:56,798 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 05:16:56,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:16:56,974 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 05:16:56,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:16:57,011 INFO L208 MainTranslator]: Completed translation [2020-11-07 05:16:57,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:57 WrapperNode [2020-11-07 05:16:57,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 05:16:57,012 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 05:16:57,013 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 05:16:57,013 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 05:16:57,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:57" (1/1) ... [2020-11-07 05:16:57,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:57" (1/1) ... [2020-11-07 05:16:57,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:57" (1/1) ... [2020-11-07 05:16:57,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:57" (1/1) ... [2020-11-07 05:16:57,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:57" (1/1) ... [2020-11-07 05:16:57,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:57" (1/1) ... [2020-11-07 05:16:57,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:57" (1/1) ... [2020-11-07 05:16:57,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 05:16:57,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 05:16:57,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 05:16:57,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 05:16:57,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 05:16:57,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 05:16:57,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 05:16:57,169 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 05:16:57,170 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-11-07 05:16:57,170 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 05:16:57,170 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 05:16:57,170 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 05:16:57,170 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 05:16:57,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 05:16:57,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 05:16:57,171 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-11-07 05:16:57,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 05:16:57,172 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 05:16:57,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 05:16:57,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 05:16:57,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 05:16:57,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 05:16:57,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 05:16:57,658 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 05:16:57,658 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 05:16:57,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:16:57 BoogieIcfgContainer [2020-11-07 05:16:57,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 05:16:57,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 05:16:57,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 05:16:57,667 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 05:16:57,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:16:56" (1/3) ... [2020-11-07 05:16:57,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f27cc6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:16:57, skipping insertion in model container [2020-11-07 05:16:57,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:57" (2/3) ... [2020-11-07 05:16:57,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f27cc6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:16:57, skipping insertion in model container [2020-11-07 05:16:57,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:16:57" (3/3) ... [2020-11-07 05:16:57,671 INFO L111 eAbstractionObserver]: Analyzing ICFG test24-1.c [2020-11-07 05:16:57,707 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 05:16:57,711 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 05:16:57,724 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 05:16:57,750 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 05:16:57,750 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 05:16:57,750 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 05:16:57,750 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 05:16:57,750 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 05:16:57,751 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 05:16:57,751 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 05:16:57,751 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 05:16:57,768 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-11-07 05:16:57,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-07 05:16:57,779 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:16:57,780 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, 1, 1, 1, 1] [2020-11-07 05:16:57,780 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:16:57,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:16:57,787 INFO L82 PathProgramCache]: Analyzing trace with hash -838228713, now seen corresponding path program 1 times [2020-11-07 05:16:57,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:16:57,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999399543] [2020-11-07 05:16:57,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:16:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:58,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:16:58,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:58,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-11-07 05:16:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:58,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:16:58,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999399543] [2020-11-07 05:16:58,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:16:58,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 05:16:58,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463323855] [2020-11-07 05:16:58,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 05:16:58,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:16:58,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 05:16:58,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 05:16:58,201 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 3 states. [2020-11-07 05:16:58,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:16:58,424 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2020-11-07 05:16:58,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 05:16:58,426 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-11-07 05:16:58,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:16:58,446 INFO L225 Difference]: With dead ends: 83 [2020-11-07 05:16:58,447 INFO L226 Difference]: Without dead ends: 47 [2020-11-07 05:16:58,450 INFO L677 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 [2020-11-07 05:16:58,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-07 05:16:58,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-11-07 05:16:58,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-07 05:16:58,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2020-11-07 05:16:58,503 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 40 [2020-11-07 05:16:58,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:16:58,504 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2020-11-07 05:16:58,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 05:16:58,504 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2020-11-07 05:16:58,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-07 05:16:58,506 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:16:58,506 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, 1, 1, 1, 1, 1, 1] [2020-11-07 05:16:58,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 05:16:58,507 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:16:58,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:16:58,508 INFO L82 PathProgramCache]: Analyzing trace with hash -696041982, now seen corresponding path program 1 times [2020-11-07 05:16:58,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:16:58,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673478671] [2020-11-07 05:16:58,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:16:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:58,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:16:58,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:58,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 05:16:58,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:58,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:16:58,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673478671] [2020-11-07 05:16:58,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:16:58,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 05:16:58,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869152786] [2020-11-07 05:16:58,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 05:16:58,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:16:58,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 05:16:58,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-07 05:16:58,843 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 8 states. [2020-11-07 05:16:59,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:16:59,188 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2020-11-07 05:16:59,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-07 05:16:59,188 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-11-07 05:16:59,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:16:59,190 INFO L225 Difference]: With dead ends: 67 [2020-11-07 05:16:59,191 INFO L226 Difference]: Without dead ends: 52 [2020-11-07 05:16:59,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-11-07 05:16:59,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-07 05:16:59,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2020-11-07 05:16:59,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-07 05:16:59,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2020-11-07 05:16:59,207 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 42 [2020-11-07 05:16:59,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:16:59,208 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2020-11-07 05:16:59,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 05:16:59,208 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2020-11-07 05:16:59,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-07 05:16:59,210 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:16:59,210 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, 1, 1, 1, 1, 1, 1] [2020-11-07 05:16:59,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 05:16:59,210 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:16:59,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:16:59,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1919562198, now seen corresponding path program 1 times [2020-11-07 05:16:59,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:16:59,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406879030] [2020-11-07 05:16:59,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:16:59,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:59,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:16:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:59,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-11-07 05:16:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:59,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:16:59,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406879030] [2020-11-07 05:16:59,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 05:16:59,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-11-07 05:16:59,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436565926] [2020-11-07 05:16:59,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-07 05:16:59,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:16:59,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-07 05:16:59,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-11-07 05:16:59,742 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 15 states. [2020-11-07 05:17:00,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:17:00,391 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2020-11-07 05:17:00,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-07 05:17:00,392 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 48 [2020-11-07 05:17:00,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:17:00,393 INFO L225 Difference]: With dead ends: 49 [2020-11-07 05:17:00,393 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 05:17:00,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2020-11-07 05:17:00,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 05:17:00,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 05:17:00,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 05:17:00,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 05:17:00,395 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2020-11-07 05:17:00,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:17:00,395 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 05:17:00,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-07 05:17:00,396 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 05:17:00,396 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 05:17:00,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 05:17:00,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 05:17:01,157 INFO L269 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-11-07 05:17:01,157 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-11-07 05:17:01,157 INFO L269 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-11-07 05:17:01,157 INFO L269 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-11-07 05:17:01,158 INFO L269 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-11-07 05:17:01,158 INFO L269 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-11-07 05:17:01,158 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 05:17:01,158 INFO L269 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-11-07 05:17:01,158 INFO L269 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-11-07 05:17:01,158 INFO L269 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2020-11-07 05:17:01,159 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-11-07 05:17:01,159 INFO L269 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-11-07 05:17:01,159 INFO L269 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-11-07 05:17:01,159 INFO L269 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-11-07 05:17:01,159 INFO L269 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-11-07 05:17:01,159 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 05:17:01,160 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-07 05:17:01,160 INFO L269 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-11-07 05:17:01,160 INFO L262 CegarLoopResult]: At program point L31(line 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) (= main_~i~0 (select .cse0 (+ (* main_~i~0 8) |main_~#ad1~0.offset|))) (<= (* 8 main_~i~0) (* 8 .cse1)) (<= 1 |main_#t~ret12|) (= |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))) [2020-11-07 05:17:01,160 INFO L262 CegarLoopResult]: At program point L31-1(lines 31 33) 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)) (<= 1 |main_#t~ret12|) (= |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))) [2020-11-07 05:17:01,161 INFO L262 CegarLoopResult]: At program point L31-2(line 31) the Hoare annotation is: false [2020-11-07 05:17:01,161 INFO L269 CegarLoopResult]: At program point L31-3(line 31) the Hoare annotation is: true [2020-11-07 05:17:01,161 INFO L262 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: (let ((.cse0 (* main_~i~0 8))) (and (= (+ .cse0 main_~ad2~0.offset) main_~pa~0.offset) (= |main_~#ad1~0.offset| 0) (= main_~pa~0.base main_~ad2~0.base) (= main_~i~0 (select (select |#memory_int| |main_~#ad1~0.base|) (+ .cse0 |main_~#ad1~0.offset|))) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base))) [2020-11-07 05:17:01,161 INFO L262 CegarLoopResult]: At program point L27-1(line 27) the Hoare annotation is: (let ((.cse0 (* main_~i~0 8))) (and (= (+ .cse0 main_~ad2~0.offset) main_~pa~0.offset) (= |main_#t~mem9| (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset)) (= |main_~#ad1~0.offset| 0) (= main_~pa~0.base main_~ad2~0.base) (= main_~i~0 (select (select |#memory_int| |main_~#ad1~0.base|) (+ .cse0 |main_~#ad1~0.offset|))) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base))) [2020-11-07 05:17:01,161 INFO L262 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_#t~mem9| .cse0) (= |main_~#ad1~0.offset| 0) (<= (+ main_~i~0 10) .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))) [2020-11-07 05:17:01,162 INFO L269 CegarLoopResult]: At program point mainEXIT(lines 16 40) the Hoare annotation is: true [2020-11-07 05:17:01,162 INFO L262 CegarLoopResult]: At program point L23(lines 23 34) the Hoare annotation is: (= |main_~#ad1~0.offset| 0) [2020-11-07 05:17:01,162 INFO L269 CegarLoopResult]: At program point L23-2(lines 23 34) the Hoare annotation is: true [2020-11-07 05:17:01,162 INFO L262 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |main_~#ad1~0.offset| 0) [2020-11-07 05:17:01,162 INFO L262 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: (= |main_~#ad1~0.offset| 0) [2020-11-07 05:17:01,162 INFO L262 CegarLoopResult]: At program point L32(lines 17 40) the Hoare annotation is: false [2020-11-07 05:17:01,163 INFO L262 CegarLoopResult]: At program point L28-1(lines 28 30) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= |main_#t~mem10| (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* |main_#t~mem10| 8) |main_~#ad1~0.offset|))) (= |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) (= |main_#t~mem10| .cse0))) [2020-11-07 05:17:01,163 INFO L262 CegarLoopResult]: At program point L28-2(line 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_#t~mem10| (select .cse0 (+ (* |main_#t~mem10| 8) |main_~#ad1~0.offset|))) (= |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) (= |main_#t~mem10| .cse1))) [2020-11-07 05:17:01,163 INFO L262 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: (= |main_~#ad1~0.offset| 0) [2020-11-07 05:17:01,163 INFO L262 CegarLoopResult]: At program point L28-4(line 28) the Hoare annotation is: (and (= |main_#t~mem10| (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* |main_#t~mem10| 8) |main_~#ad1~0.offset|))) (= |main_~#ad1~0.offset| 0) (<= (+ main_~i~0 1) |main_#t~mem10|) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= |main_#t~mem10| (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) [2020-11-07 05:17:01,163 INFO L262 CegarLoopResult]: At program point L28-5(lines 28 30) 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))) [2020-11-07 05:17:01,164 INFO L262 CegarLoopResult]: At program point L28-6(lines 28 30) 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))) [2020-11-07 05:17:01,164 INFO L262 CegarLoopResult]: At program point L29(line 29) 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))) [2020-11-07 05:17:01,164 INFO L262 CegarLoopResult]: At program point L29-1(line 29) 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))) [2020-11-07 05:17:01,164 INFO L262 CegarLoopResult]: At program point L29-2(line 29) 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))) [2020-11-07 05:17:01,164 INFO L262 CegarLoopResult]: At program point L25(line 25) 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)) [2020-11-07 05:17:01,165 INFO L262 CegarLoopResult]: At program point L25-1(line 25) the Hoare annotation is: (and (= |main_~#ad1~0.offset| 0) (= main_~i~0 (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* main_~i~0 8) |main_~#ad1~0.offset|))) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base)) [2020-11-07 05:17:01,165 INFO L262 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (= |main_~#ad1~0.offset| 0) [2020-11-07 05:17:01,165 INFO L262 CegarLoopResult]: At program point L21-1(line 21) the Hoare annotation is: (= |main_~#ad1~0.offset| 0) [2020-11-07 05:17:01,165 INFO L262 CegarLoopResult]: At program point L21-2(line 21) the Hoare annotation is: (= |main_~#ad1~0.offset| 0) [2020-11-07 05:17:01,165 INFO L269 CegarLoopResult]: At program point mainFINAL(lines 16 40) the Hoare annotation is: true [2020-11-07 05:17:01,166 INFO L262 CegarLoopResult]: At program point L38(line 38) the Hoare annotation is: false [2020-11-07 05:17:01,166 INFO L262 CegarLoopResult]: At program point mainENTRY(lines 16 40) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-11-07 05:17:01,166 INFO L262 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (= |main_~#ad1~0.offset| 0) [2020-11-07 05:17:01,166 INFO L269 CegarLoopResult]: At program point L18-1(line 18) the Hoare annotation is: true [2020-11-07 05:17:01,166 INFO L269 CegarLoopResult]: At program point L18-2(line 18) the Hoare annotation is: true [2020-11-07 05:17:01,166 INFO L262 CegarLoopResult]: At program point L18-3(line 18) the Hoare annotation is: false [2020-11-07 05:17:01,167 INFO L262 CegarLoopResult]: At program point L18-4(line 18) the Hoare annotation is: false [2020-11-07 05:17:01,167 INFO L262 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: false [2020-11-07 05:17:01,167 INFO L269 CegarLoopResult]: At program point checkENTRY(lines 11 14) the Hoare annotation is: true [2020-11-07 05:17:01,167 INFO L262 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (and (= check_~ad1.offset |check_#in~ad1.offset|) (= check_~ad1.base |check_#in~ad1.base|) (= |check_#in~b| check_~b)) [2020-11-07 05:17:01,167 INFO L262 CegarLoopResult]: At program point L13-1(line 13) the Hoare annotation is: (and (= check_~ad1.offset |check_#in~ad1.offset|) (= check_~ad1.base |check_#in~ad1.base|) (= |check_#t~mem7| (select (select |#memory_int| |check_#in~ad1.base|) (+ |check_#in~ad1.offset| (* check_~b 8)))) (= |check_#in~b| check_~b)) [2020-11-07 05:17:01,167 INFO L262 CegarLoopResult]: At program point L11(lines 11 14) the Hoare annotation is: (and (= check_~ad1.offset |check_#in~ad1.offset|) (= check_~ad1.base |check_#in~ad1.base|)) [2020-11-07 05:17:01,168 INFO L262 CegarLoopResult]: At program point L13-2(line 13) 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~mem7| (select .cse0 (+ |check_#in~ad1.offset| (* check_~b 8)))) (= |check_#in~b| check_~b))) [2020-11-07 05:17:01,168 INFO L262 CegarLoopResult]: At program point checkFINAL(lines 11 14) 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)) [2020-11-07 05:17:01,168 INFO L262 CegarLoopResult]: At program point checkEXIT(lines 11 14) 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)) [2020-11-07 05:17:01,178 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-07 05:17:01,180 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-07 05:17:01,180 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-07 05:17:01,180 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-07 05:17:01,186 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-07 05:17:01,186 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-07 05:17:01,186 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-07 05:17:01,186 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-07 05:17:01,189 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-07 05:17:01,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 05:17:01 BoogieIcfgContainer [2020-11-07 05:17:01,191 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 05:17:01,194 INFO L168 Benchmark]: Toolchain (without parser) took 4432.90 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 127.8 MB in the beginning and 115.2 MB in the end (delta: 12.7 MB). Peak memory consumption was 100.7 MB. Max. memory is 8.0 GB. [2020-11-07 05:17:01,195 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 124.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 05:17:01,196 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.35 ms. Allocated memory is still 151.0 MB. Free memory was 127.2 MB in the beginning and 117.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-07 05:17:01,197 INFO L168 Benchmark]: Boogie Preprocessor took 68.62 ms. Allocated memory is still 151.0 MB. Free memory was 117.5 MB in the beginning and 115.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 05:17:01,198 INFO L168 Benchmark]: RCFGBuilder took 578.70 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 99.3 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-11-07 05:17:01,199 INFO L168 Benchmark]: TraceAbstraction took 3527.81 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 98.9 MB in the beginning and 115.2 MB in the end (delta: -16.3 MB). Peak memory consumption was 71.3 MB. Max. memory is 8.0 GB. [2020-11-07 05:17:01,203 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 124.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 245.35 ms. Allocated memory is still 151.0 MB. Free memory was 127.2 MB in the beginning and 117.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 68.62 ms. Allocated memory is still 151.0 MB. Free memory was 117.5 MB in the beginning and 115.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 578.70 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 99.3 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3527.81 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 98.9 MB in the beginning and 115.2 MB in the end (delta: -16.3 MB). Peak memory consumption was 71.3 MB. Max. memory is 8.0 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: 3]: 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: 28]: Loop Invariant [2020-11-07 05:17:01,212 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-07 05:17:01,212 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-07 05:17:01,212 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-07 05:17:01,212 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-07 05:17:01,213 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-07 05:17:01,213 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-07 05:17:01,213 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-07 05:17:01,213 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] - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 0 - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 16]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 11]: Procedure Contract for check [2020-11-07 05:17:01,214 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-07 05:17:01,215 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 5 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 122 SDtfs, 88 SDslu, 267 SDs, 0 SdLazy, 370 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred 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, 61 LocationsWithAnnotation, 83 PreInvPairs, 97 NumberOfFragments, 801 HoareAnnotationTreeSize, 83 FomulaSimplifications, 59 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 61 FomulaSimplificationsInter, 385 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 127 ConstructedInterpolants, 0 QuantifiedInterpolants, 33608 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...