/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/test26-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:35:14,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:35:14,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:35:14,734 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:35:14,735 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:35:14,736 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:35:14,738 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:35:14,741 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:35:14,743 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:35:14,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:35:14,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:35:14,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:35:14,748 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:35:14,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:35:14,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:35:14,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:35:14,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:35:14,755 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:35:14,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:35:14,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:35:14,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:35:14,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:35:14,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:35:14,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:35:14,783 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 20:35:14,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:35:14,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:35:14,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:35:14,807 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:35:14,829 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:35:14,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:35:14,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:35:14,835 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:35:14,835 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:35:14,835 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:35:14,835 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:35:14,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:35:14,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:35:14,836 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:35:14,837 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:35:14,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:35:14,838 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:35:14,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:35:14,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:35:14,838 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:35:14,838 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:35:14,839 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:35:14,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:35:14,839 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:35:14,839 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:35:14,839 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:35:14,840 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:35:15,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:35:15,332 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:35:15,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:35:15,336 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:35:15,337 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:35:15,338 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test26-1.c [2020-10-23 20:35:15,411 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c92572584/ab957971ae6244a1a09d0c0b89bf1f82/FLAGc6c4d6e7b [2020-10-23 20:35:15,985 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:35:15,986 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test26-1.c [2020-10-23 20:35:15,994 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c92572584/ab957971ae6244a1a09d0c0b89bf1f82/FLAGc6c4d6e7b [2020-10-23 20:35:16,342 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c92572584/ab957971ae6244a1a09d0c0b89bf1f82 [2020-10-23 20:35:16,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:35:16,356 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:35:16,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:35:16,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:35:16,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:35:16,367 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:35:16" (1/1) ... [2020-10-23 20:35:16,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fac4a08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:16, skipping insertion in model container [2020-10-23 20:35:16,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:35:16" (1/1) ... [2020-10-23 20:35:16,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:35:16,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:35:16,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:35:16,666 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:35:16,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:35:16,710 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:35:16,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:16 WrapperNode [2020-10-23 20:35:16,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:35:16,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:35:16,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:35:16,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:35:16,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:16" (1/1) ... [2020-10-23 20:35:16,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:16" (1/1) ... [2020-10-23 20:35:16,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:16" (1/1) ... [2020-10-23 20:35:16,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:16" (1/1) ... [2020-10-23 20:35:16,761 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:16" (1/1) ... [2020-10-23 20:35:16,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:16" (1/1) ... [2020-10-23 20:35:16,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:16" (1/1) ... [2020-10-23 20:35:16,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:35:16,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:35:16,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:35:16,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:35:16,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:16" (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 [2020-10-23 20:35:16,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:35:16,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:35:16,883 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:35:16,883 INFO L138 BoogieDeclarations]: Found implementation of procedure assign [2020-10-23 20:35:16,884 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:35:16,884 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:35:16,884 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:35:16,884 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:35:16,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:35:16,885 INFO L130 BoogieDeclarations]: Found specification of procedure assign [2020-10-23 20:35:16,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:35:16,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:35:16,885 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:35:16,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:35:16,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:35:16,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:35:16,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:35:17,279 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:35:17,279 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-23 20:35:17,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:35:17 BoogieIcfgContainer [2020-10-23 20:35:17,282 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:35:17,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:35:17,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:35:17,289 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:35:17,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:35:16" (1/3) ... [2020-10-23 20:35:17,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402f11c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:35:17, skipping insertion in model container [2020-10-23 20:35:17,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:16" (2/3) ... [2020-10-23 20:35:17,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402f11c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:35:17, skipping insertion in model container [2020-10-23 20:35:17,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:35:17" (3/3) ... [2020-10-23 20:35:17,293 INFO L111 eAbstractionObserver]: Analyzing ICFG test26-1.c [2020-10-23 20:35:17,306 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:35:17,312 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:35:17,330 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:35:17,374 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:35:17,374 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:35:17,374 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:35:17,374 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:35:17,375 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:35:17,375 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:35:17,375 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:35:17,375 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:35:17,404 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-10-23 20:35:17,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-23 20:35:17,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:35:17,419 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] [2020-10-23 20:35:17,420 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:35:17,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:35:17,438 INFO L82 PathProgramCache]: Analyzing trace with hash 842441320, now seen corresponding path program 1 times [2020-10-23 20:35:17,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:35:17,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128235757] [2020-10-23 20:35:17,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:35:17,559 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:35:17,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:18,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:35:18,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:18,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-23 20:35:18,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:18,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:35:18,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128235757] [2020-10-23 20:35:18,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:35:18,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-23 20:35:18,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546064487] [2020-10-23 20:35:18,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-23 20:35:18,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:35:18,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-23 20:35:18,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-23 20:35:18,571 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 13 states. [2020-10-23 20:35:19,283 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2020-10-23 20:35:19,493 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2020-10-23 20:35:19,703 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-10-23 20:35:19,913 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 68 [2020-10-23 20:35:20,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:35:20,257 INFO L93 Difference]: Finished difference Result 47 states and 46 transitions. [2020-10-23 20:35:20,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 20:35:20,261 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2020-10-23 20:35:20,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:35:20,268 INFO L225 Difference]: With dead ends: 47 [2020-10-23 20:35:20,268 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 20:35:20,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2020-10-23 20:35:20,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 20:35:20,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 20:35:20,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 20:35:20,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 20:35:20,303 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2020-10-23 20:35:20,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:35:20,304 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 20:35:20,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-23 20:35:20,304 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 20:35:20,304 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 20:35:20,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:35:20,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 20:35:20,655 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 35 [2020-10-23 20:35:21,309 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 41 [2020-10-23 20:35:21,475 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 38 [2020-10-23 20:35:21,730 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 35 [2020-10-23 20:35:21,890 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-10-23 20:35:21,890 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-23 20:35:21,891 INFO L277 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-10-23 20:35:21,891 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-10-23 20:35:21,891 INFO L277 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-10-23 20:35:21,891 INFO L277 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-10-23 20:35:21,891 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 20:35:21,891 INFO L277 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-10-23 20:35:21,892 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-23 20:35:21,892 INFO L277 CegarLoopResult]: At program point L3-5(line 3) the Hoare annotation is: true [2020-10-23 20:35:21,892 INFO L270 CegarLoopResult]: At program point ULTIMATE.initFINAL(lines 5 7) the Hoare annotation is: (= |~#global~0.offset| 0) [2020-10-23 20:35:21,892 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |~#global~0.base| |old(~#global~0.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |#t~string5.base| |old(#t~string5.base)|) (= |old(#t~string6.offset)| |#t~string6.offset|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |~#global~0.offset| |old(~#global~0.offset)|) (= |old(#t~string4.offset)| |#t~string4.offset|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-23 20:35:21,893 INFO L270 CegarLoopResult]: At program point L5(lines 5 7) the Hoare annotation is: (= |~#global~0.offset| 0) [2020-10-23 20:35:21,893 INFO L270 CegarLoopResult]: At program point L5-1(lines 5 7) the Hoare annotation is: (= |~#global~0.offset| 0) [2020-10-23 20:35:21,893 INFO L277 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-10-23 20:35:21,893 INFO L277 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-10-23 20:35:21,893 INFO L270 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: (= |~#global~0.offset| 0) [2020-10-23 20:35:21,893 INFO L270 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: (= |~#global~0.offset| 0) [2020-10-23 20:35:21,893 INFO L270 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (= |~#global~0.offset| 0) [2020-10-23 20:35:21,894 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 20:35:21,894 INFO L270 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: (= |~#global~0.offset| 0) [2020-10-23 20:35:21,894 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 14 28) the Hoare annotation is: (or (= |#memory_int| |old(#memory_int)|) (not (= |~#global~0.offset| 0))) [2020-10-23 20:35:21,894 INFO L270 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: (not (= |~#global~0.offset| 0)) [2020-10-23 20:35:21,894 INFO L270 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (not (= |~#global~0.offset| 0)) [2020-10-23 20:35:21,895 INFO L270 CegarLoopResult]: At program point mainEXIT(lines 14 28) the Hoare annotation is: (or (and (= (select (select |#memory_int| main_~pd~0.base) main_~pd~0.offset) (select (select |#memory_int| |~#global~0.base|) (+ |~#global~0.offset| 4))) (= main_~pd~0.offset 0) (= |~#global~0.base| main_~pd~0.base)) (not (= |~#global~0.offset| 0))) [2020-10-23 20:35:21,895 INFO L270 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: (or (and (= (select (select |#memory_int| main_~pd~0.base) main_~pd~0.offset) (select (select |#memory_int| |~#global~0.base|) (+ |~#global~0.offset| 4))) (= main_~pd~0.offset 0) (= |~#global~0.base| main_~pd~0.base)) (not (= |~#global~0.offset| 0))) [2020-10-23 20:35:21,895 INFO L270 CegarLoopResult]: At program point L21(lines 15 28) the Hoare annotation is: (not (= |~#global~0.offset| 0)) [2020-10-23 20:35:21,895 INFO L270 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (or (not (= |~#global~0.offset| 0)) (let ((.cse0 (select (select |#memory_int| |~#global~0.base|) (+ |~#global~0.offset| 4)))) (and (= (select (select |#memory_int| main_~pd~0.base) main_~pd~0.offset) .cse0) (= main_~pd~0.offset 0) (= .cse0 |main_#t~mem8|) (= |~#global~0.base| main_~pd~0.base)))) [2020-10-23 20:35:21,896 INFO L270 CegarLoopResult]: At program point L20-1(lines 20 22) the Hoare annotation is: (or (let ((.cse0 (select (select |#memory_int| |~#global~0.base|) (+ |~#global~0.offset| 4)))) (and (= (select (select |#memory_int| main_~pd~0.base) main_~pd~0.offset) .cse0) (= main_~pd~0.offset 0) (= |main_#t~mem9| |main_#t~mem8|) (= .cse0 |main_#t~mem8|) (= |~#global~0.base| main_~pd~0.base))) (not (= |~#global~0.offset| 0))) [2020-10-23 20:35:21,896 INFO L270 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (or (and (= |#memory_int| |old(#memory_int)|) (= main_~pd~0.offset 0) (= |~#global~0.base| main_~pd~0.base)) (not (= |~#global~0.offset| 0))) [2020-10-23 20:35:21,896 INFO L270 CegarLoopResult]: At program point L20-2(line 20) the Hoare annotation is: (not (= |~#global~0.offset| 0)) [2020-10-23 20:35:21,896 INFO L270 CegarLoopResult]: At program point L18-1(line 18) the Hoare annotation is: (or (and (= (select (select |#memory_int| main_~pd~0.base) main_~pd~0.offset) (select (select |#memory_int| |~#global~0.base|) (+ |~#global~0.offset| 4))) (= main_~pd~0.offset 0) (= |~#global~0.base| main_~pd~0.base)) (not (= |~#global~0.offset| 0))) [2020-10-23 20:35:21,896 INFO L270 CegarLoopResult]: At program point L20-3(line 20) the Hoare annotation is: (not (= |~#global~0.offset| 0)) [2020-10-23 20:35:21,897 INFO L270 CegarLoopResult]: At program point L20-4(line 20) the Hoare annotation is: (or (let ((.cse0 (select (select |#memory_int| |~#global~0.base|) (+ |~#global~0.offset| 4)))) (and (= (select (select |#memory_int| main_~pd~0.base) main_~pd~0.offset) .cse0) (= main_~pd~0.offset 0) (= |main_#t~mem9| |main_#t~mem8|) (= .cse0 |main_#t~mem8|) (= |~#global~0.base| main_~pd~0.base))) (not (= |~#global~0.offset| 0))) [2020-10-23 20:35:21,897 INFO L270 CegarLoopResult]: At program point L20-5(line 20) the Hoare annotation is: (or (not (= |~#global~0.offset| 0)) (let ((.cse0 (select (select |#memory_int| |~#global~0.base|) (+ |~#global~0.offset| 4)))) (and (= (select (select |#memory_int| main_~pd~0.base) main_~pd~0.offset) .cse0) (= main_~pd~0.offset 0) (= .cse0 |main_#t~mem8|) (= |~#global~0.base| main_~pd~0.base)))) [2020-10-23 20:35:21,897 INFO L270 CegarLoopResult]: At program point mainFINAL(lines 14 28) the Hoare annotation is: (or (and (= (select (select |#memory_int| main_~pd~0.base) main_~pd~0.offset) (select (select |#memory_int| |~#global~0.base|) (+ |~#global~0.offset| 4))) (= main_~pd~0.offset 0) (= |~#global~0.base| main_~pd~0.base)) (not (= |~#global~0.offset| 0))) [2020-10-23 20:35:21,898 INFO L270 CegarLoopResult]: At program point assignEXIT(lines 9 12) the Hoare annotation is: (or (let ((.cse0 (not (= |assign_#in~pa.base| |assign_#in~pb.base|))) (.cse2 (= assign_~pb.offset assign_~pa.offset))) (and (= assign_~pa.base |assign_#in~pa.base|) (or .cse0 (let ((.cse1 (select |#memory_int| |assign_#in~pa.base|))) (= (select .cse1 |assign_#in~pa.offset|) (select .cse1 |assign_#in~pb.offset|)))) (= assign_~pa.offset |assign_#in~pa.offset|) (or (not .cse2) (= |assign_#in~pb.offset| |assign_#in~pa.offset|)) (or (let ((.cse3 (= assign_~pa.base assign_~pb.base))) (and (or .cse0 .cse3) (or (= assign_~pb.offset |assign_#in~pb.offset|) (not .cse3)))) .cse2))) (not (= |~#global~0.offset| 0))) [2020-10-23 20:35:21,898 INFO L270 CegarLoopResult]: At program point assignENTRY(lines 9 12) the Hoare annotation is: (or (= |#memory_int| |old(#memory_int)|) (not (= |~#global~0.offset| 0))) [2020-10-23 20:35:21,898 INFO L270 CegarLoopResult]: At program point assignFINAL(lines 9 12) the Hoare annotation is: (or (let ((.cse0 (not (= |assign_#in~pa.base| |assign_#in~pb.base|))) (.cse2 (= assign_~pb.offset assign_~pa.offset))) (and (= assign_~pa.base |assign_#in~pa.base|) (or .cse0 (let ((.cse1 (select |#memory_int| |assign_#in~pa.base|))) (= (select .cse1 |assign_#in~pa.offset|) (select .cse1 |assign_#in~pb.offset|)))) (= assign_~pa.offset |assign_#in~pa.offset|) (or (not .cse2) (= |assign_#in~pb.offset| |assign_#in~pa.offset|)) (or (let ((.cse3 (= assign_~pa.base assign_~pb.base))) (and (or .cse0 .cse3) (or (= assign_~pb.offset |assign_#in~pb.offset|) (not .cse3)))) .cse2))) (not (= |~#global~0.offset| 0))) [2020-10-23 20:35:21,898 INFO L270 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: (or (let ((.cse0 (= assign_~pb.offset assign_~pa.offset))) (and (= assign_~pa.base |assign_#in~pa.base|) (= |#memory_int| |old(#memory_int)|) (= assign_~pa.offset |assign_#in~pa.offset|) (or (not .cse0) (= |assign_#in~pb.offset| |assign_#in~pa.offset|)) (or (let ((.cse1 (= assign_~pa.base assign_~pb.base))) (and (or (not (= |assign_#in~pa.base| |assign_#in~pb.base|)) .cse1) (or (= assign_~pb.offset |assign_#in~pb.offset|) (not .cse1)))) .cse0))) (not (= |~#global~0.offset| 0))) [2020-10-23 20:35:21,899 INFO L270 CegarLoopResult]: At program point L11-1(line 11) the Hoare annotation is: (or (not (= |~#global~0.offset| 0)) (let ((.cse1 (not (= |assign_#in~pa.base| |assign_#in~pb.base|))) (.cse0 (= assign_~pb.offset assign_~pa.offset))) (and (= assign_~pa.base |assign_#in~pa.base|) (= |#memory_int| |old(#memory_int)|) (= assign_~pa.offset |assign_#in~pa.offset|) (or (not .cse0) (= |assign_#in~pb.offset| |assign_#in~pa.offset|)) (or .cse1 (= |assign_#t~mem7| (select (store (select |#memory_int| assign_~pa.base) assign_~pa.offset |assign_#t~mem7|) |assign_#in~pb.offset|))) (or (let ((.cse2 (= assign_~pa.base assign_~pb.base))) (and (or .cse1 .cse2) (or (= assign_~pb.offset |assign_#in~pb.offset|) (not .cse2)))) .cse0)))) [2020-10-23 20:35:21,899 INFO L270 CegarLoopResult]: At program point L9(lines 9 12) the Hoare annotation is: (or (and (= assign_~pa.base |assign_#in~pa.base|) (= |#memory_int| |old(#memory_int)|) (= assign_~pa.offset |assign_#in~pa.offset|)) (not (= |~#global~0.offset| 0))) [2020-10-23 20:35:21,899 INFO L270 CegarLoopResult]: At program point L11-2(line 11) the Hoare annotation is: (or (let ((.cse0 (not (= |assign_#in~pa.base| |assign_#in~pb.base|))) (.cse2 (= assign_~pb.offset assign_~pa.offset))) (and (= assign_~pa.base |assign_#in~pa.base|) (or .cse0 (let ((.cse1 (select |#memory_int| |assign_#in~pa.base|))) (= (select .cse1 |assign_#in~pa.offset|) (select .cse1 |assign_#in~pb.offset|)))) (= assign_~pa.offset |assign_#in~pa.offset|) (or (not .cse2) (= |assign_#in~pb.offset| |assign_#in~pa.offset|)) (or .cse0 (= |assign_#t~mem7| (select (store (select |#memory_int| assign_~pa.base) assign_~pa.offset |assign_#t~mem7|) |assign_#in~pb.offset|))) (or (let ((.cse3 (= assign_~pa.base assign_~pb.base))) (and (or .cse0 .cse3) (or (= assign_~pb.offset |assign_#in~pb.offset|) (not .cse3)))) .cse2))) (not (= |~#global~0.offset| 0))) [2020-10-23 20:35:21,916 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:35:21,917 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:35:21,920 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:35:21,920 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:35:21,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:35:21 BoogieIcfgContainer [2020-10-23 20:35:21,923 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:35:21,925 INFO L168 Benchmark]: Toolchain (without parser) took 5574.32 ms. Allocated memory was 125.8 MB in the beginning and 191.9 MB in the end (delta: 66.1 MB). Free memory was 102.1 MB in the beginning and 117.4 MB in the end (delta: -15.3 MB). Peak memory consumption was 86.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:35:21,926 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 125.8 MB. Free memory is still 97.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:35:21,927 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.57 ms. Allocated memory is still 125.8 MB. Free memory was 101.6 MB in the beginning and 92.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:35:21,928 INFO L168 Benchmark]: Boogie Preprocessor took 61.61 ms. Allocated memory is still 125.8 MB. Free memory was 92.3 MB in the beginning and 90.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:35:21,929 INFO L168 Benchmark]: RCFGBuilder took 504.76 ms. Allocated memory was 125.8 MB in the beginning and 159.4 MB in the end (delta: 33.6 MB). Free memory was 90.9 MB in the beginning and 138.8 MB in the end (delta: -47.8 MB). Peak memory consumption was 12.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:35:21,931 INFO L168 Benchmark]: TraceAbstraction took 4638.74 ms. Allocated memory was 159.4 MB in the beginning and 191.9 MB in the end (delta: 32.5 MB). Free memory was 138.2 MB in the beginning and 118.0 MB in the end (delta: 20.2 MB). Peak memory consumption was 87.2 MB. Max. memory is 8.0 GB. [2020-10-23 20:35:21,935 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 125.8 MB. Free memory is still 97.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 350.57 ms. Allocated memory is still 125.8 MB. Free memory was 101.6 MB in the beginning and 92.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 61.61 ms. Allocated memory is still 125.8 MB. Free memory was 92.3 MB in the beginning and 90.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 504.76 ms. Allocated memory was 125.8 MB in the beginning and 159.4 MB in the end (delta: 33.6 MB). Free memory was 90.9 MB in the beginning and 138.8 MB in the end (delta: -47.8 MB). Peak memory consumption was 12.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4638.74 ms. Allocated memory was 159.4 MB in the beginning and 191.9 MB in the end (delta: 32.5 MB). Free memory was 138.2 MB in the beginning and 118.0 MB in the end (delta: 20.2 MB). Peak memory consumption was 87.2 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 * 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: 15]: Loop Invariant Derived loop invariant: !(global == 0) - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 14]: Procedure Contract for main [2020-10-23 20:35:21,945 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:35:21,946 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:35:21,946 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:35:21,947 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived contract for procedure main: ((unknown-#memory_int-unknown[pd][pd] == unknown-#memory_int-unknown[global][global + 4] && pd == 0) && global == pd) || !(global == 0) - ProcedureContractResult [Line: 9]: Procedure Contract for assign [2020-10-23 20:35:21,948 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:35:21,948 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:35:21,949 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-23 20:35:21,949 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived contract for procedure assign: ((((pa == pa && (!(pa == pb) || unknown-#memory_int-unknown[pa][pa] == unknown-#memory_int-unknown[pa][pb])) && pa == pa) && (!(pb == pa) || pb == pa)) && (((!(pa == pb) || pa == pb) && (pb == pb || !(pa == pb))) || pb == pa)) || !(global == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 61 SDslu, 27 SDs, 0 SdLazy, 239 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 43 LocationsWithAnnotation, 43 PreInvPairs, 47 NumberOfFragments, 668 HoareAnnotationTreeSize, 43 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 43 FomulaSimplificationsInter, 700 FormulaSimplificationTreeSizeReductionInter, 1.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...