/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/test03.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 00:52:19,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 00:52:19,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 00:52:19,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 00:52:19,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 00:52:19,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 00:52:19,527 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 00:52:19,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 00:52:19,532 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 00:52:19,533 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 00:52:19,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 00:52:19,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 00:52:19,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 00:52:19,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 00:52:19,545 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 00:52:19,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 00:52:19,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 00:52:19,553 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 00:52:19,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 00:52:19,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 00:52:19,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 00:52:19,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 00:52:19,572 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 00:52:19,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 00:52:19,592 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 00:52:19,593 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 00:52:19,593 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 00:52:19,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 00:52:19,599 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 00:52:19,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 00:52:19,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 00:52:19,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 00:52:19,602 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 00:52:19,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 00:52:19,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 00:52:19,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 00:52:19,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 00:52:19,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 00:52:19,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 00:52:19,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 00:52:19,608 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 00:52:19,609 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 00:52:19,631 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 00:52:19,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 00:52:19,636 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 00:52:19,636 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 00:52:19,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 00:52:19,637 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 00:52:19,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 00:52:19,637 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 00:52:19,637 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 00:52:19,638 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 00:52:19,639 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 00:52:19,639 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 00:52:19,639 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 00:52:19,639 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 00:52:19,640 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 00:52:19,640 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 00:52:19,640 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 00:52:19,640 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 00:52:19,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:52:19,641 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 00:52:19,641 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 00:52:19,641 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 00:52:19,641 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 00:52:19,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 00:52:20,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 00:52:20,029 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 00:52:20,031 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 00:52:20,031 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 00:52:20,032 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test03.c [2020-11-07 00:52:20,119 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5455a54a4/239c74a69b8f4255ba642668d1ccdf80/FLAG5956a80f2 [2020-11-07 00:52:20,690 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 00:52:20,691 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test03.c [2020-11-07 00:52:20,698 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5455a54a4/239c74a69b8f4255ba642668d1ccdf80/FLAG5956a80f2 [2020-11-07 00:52:21,057 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5455a54a4/239c74a69b8f4255ba642668d1ccdf80 [2020-11-07 00:52:21,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 00:52:21,073 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 00:52:21,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 00:52:21,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 00:52:21,080 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 00:52:21,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:52:21" (1/1) ... [2020-11-07 00:52:21,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49ab84bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:21, skipping insertion in model container [2020-11-07 00:52:21,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:52:21" (1/1) ... [2020-11-07 00:52:21,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 00:52:21,113 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 00:52:21,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:52:21,312 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 00:52:21,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:52:21,346 INFO L208 MainTranslator]: Completed translation [2020-11-07 00:52:21,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:21 WrapperNode [2020-11-07 00:52:21,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 00:52:21,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 00:52:21,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 00:52:21,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 00:52:21,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:21" (1/1) ... [2020-11-07 00:52:21,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:21" (1/1) ... [2020-11-07 00:52:21,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:21" (1/1) ... [2020-11-07 00:52:21,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:21" (1/1) ... [2020-11-07 00:52:21,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:21" (1/1) ... [2020-11-07 00:52:21,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:21" (1/1) ... [2020-11-07 00:52:21,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:21" (1/1) ... [2020-11-07 00:52:21,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 00:52:21,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 00:52:21,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 00:52:21,384 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 00:52:21,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:21" (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 00:52:21,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 00:52:21,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 00:52:21,464 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 00:52:21,464 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-11-07 00:52:21,464 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 00:52:21,464 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 00:52:21,465 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 00:52:21,465 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 00:52:21,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 00:52:21,465 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-11-07 00:52:21,466 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 00:52:21,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 00:52:21,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 00:52:21,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 00:52:21,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 00:52:21,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 00:52:21,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 00:52:21,884 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 00:52:21,884 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-07 00:52:21,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:52:21 BoogieIcfgContainer [2020-11-07 00:52:21,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 00:52:21,888 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 00:52:21,889 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 00:52:21,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 00:52:21,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:52:21" (1/3) ... [2020-11-07 00:52:21,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c6eca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:52:21, skipping insertion in model container [2020-11-07 00:52:21,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:21" (2/3) ... [2020-11-07 00:52:21,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c6eca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:52:21, skipping insertion in model container [2020-11-07 00:52:21,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:52:21" (3/3) ... [2020-11-07 00:52:21,897 INFO L111 eAbstractionObserver]: Analyzing ICFG test03.c [2020-11-07 00:52:21,914 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 00:52:21,918 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 00:52:21,930 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 00:52:21,955 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 00:52:21,955 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 00:52:21,955 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 00:52:21,955 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 00:52:21,956 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 00:52:21,956 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 00:52:21,956 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 00:52:21,956 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 00:52:21,971 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-11-07 00:52:21,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-07 00:52:21,981 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:52:21,982 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] [2020-11-07 00:52:21,983 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:52:21,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:52:21,989 INFO L82 PathProgramCache]: Analyzing trace with hash 547728745, now seen corresponding path program 1 times [2020-11-07 00:52:21,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:52:22,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051237017] [2020-11-07 00:52:22,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:52:22,079 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:52:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:22,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:52:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:22,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-07 00:52:22,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:22,600 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 00:52:22,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051237017] [2020-11-07 00:52:22,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:52:22,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-11-07 00:52:22,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966811016] [2020-11-07 00:52:22,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-07 00:52:22,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:52:22,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-07 00:52:22,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-11-07 00:52:22,628 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 13 states. [2020-11-07 00:52:23,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:52:23,259 INFO L93 Difference]: Finished difference Result 55 states and 54 transitions. [2020-11-07 00:52:23,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-07 00:52:23,261 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2020-11-07 00:52:23,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:52:23,268 INFO L225 Difference]: With dead ends: 55 [2020-11-07 00:52:23,268 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 00:52:23,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2020-11-07 00:52:23,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 00:52:23,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 00:52:23,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 00:52:23,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 00:52:23,298 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2020-11-07 00:52:23,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:52:23,298 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 00:52:23,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-07 00:52:23,299 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 00:52:23,299 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 00:52:23,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 00:52:23,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 00:52:23,729 INFO L269 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-11-07 00:52:23,729 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-11-07 00:52:23,729 INFO L269 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-11-07 00:52:23,730 INFO L269 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-11-07 00:52:23,730 INFO L269 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-11-07 00:52:23,730 INFO L269 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-11-07 00:52:23,730 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 00:52:23,730 INFO L269 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-11-07 00:52:23,730 INFO L269 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-11-07 00:52:23,731 INFO L269 CegarLoopResult]: At program point L3-5(line 3) the Hoare annotation is: true [2020-11-07 00:52:23,731 INFO L269 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-11-07 00:52:23,731 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= ~q~0 |old(~q~0)|) (= |#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 00:52:23,731 INFO L269 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-11-07 00:52:23,731 INFO L269 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-11-07 00:52:23,732 INFO L269 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-11-07 00:52:23,732 INFO L262 CegarLoopResult]: At program point fEXIT(lines 6 8) the Hoare annotation is: (and (= |f_#in~p2.base| f_~p2.base) (or (= |f_#in~p1.base| |f_#in~p2.base|) (<= |f_#res| 0)) (<= 0 |f_#res|) (= |f_#in~p1.base| f_~p1.base)) [2020-11-07 00:52:23,732 INFO L262 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (and (= |f_#in~p2.base| f_~p2.base) (= |f_#in~p1.base| f_~p1.base)) [2020-11-07 00:52:23,732 INFO L262 CegarLoopResult]: At program point L6(lines 6 8) the Hoare annotation is: (= |f_#in~p1.base| f_~p1.base) [2020-11-07 00:52:23,732 INFO L269 CegarLoopResult]: At program point fENTRY(lines 6 8) the Hoare annotation is: true [2020-11-07 00:52:23,733 INFO L262 CegarLoopResult]: At program point fFINAL(lines 6 8) the Hoare annotation is: (and (= |f_#in~p2.base| f_~p2.base) (or (= |f_#in~p1.base| |f_#in~p2.base|) (<= |f_#res| 0)) (<= 0 |f_#res|) (= |f_#in~p1.base| f_~p1.base)) [2020-11-07 00:52:23,733 INFO L269 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-11-07 00:52:23,733 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 00:52:23,733 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-07 00:52:23,733 INFO L269 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-11-07 00:52:23,733 INFO L262 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: false [2020-11-07 00:52:23,734 INFO L262 CegarLoopResult]: At program point mainEXIT(lines 12 30) the Hoare annotation is: (not (= main_~p1~0.base main_~p2~0.base)) [2020-11-07 00:52:23,734 INFO L262 CegarLoopResult]: At program point L23(lines 12 30) the Hoare annotation is: false [2020-11-07 00:52:23,734 INFO L262 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (and (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select |#valid| |main_~#a~0.base|) 1)) [2020-11-07 00:52:23,734 INFO L262 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (= (select |#valid| |main_~#a~0.base|) 1) [2020-11-07 00:52:23,734 INFO L262 CegarLoopResult]: At program point mainFINAL(lines 12 30) the Hoare annotation is: (not (= main_~p1~0.base main_~p2~0.base)) [2020-11-07 00:52:23,735 INFO L262 CegarLoopResult]: At program point L13-1(line 13) the Hoare annotation is: (and (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select |#valid| |main_~#a~0.base|) 1)) [2020-11-07 00:52:23,735 INFO L262 CegarLoopResult]: At program point L13-2(line 13) the Hoare annotation is: (and (not (= main_~p1~0.base main_~p2~0.base)) (= (select (select |#memory_int| |main_~#a~0.base|) |main_~#a~0.offset|) 0) (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select |#valid| |main_~#a~0.base|) 1) (= main_~p1~0.base |main_~#a~0.base|)) [2020-11-07 00:52:23,735 INFO L262 CegarLoopResult]: At program point L13-3(line 13) the Hoare annotation is: (and (not (= main_~p1~0.base main_~p2~0.base)) (= (select (select |#memory_int| |main_~#a~0.base|) |main_~#a~0.offset|) 0) (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= main_~p1~0.base |main_~#a~0.base|)) [2020-11-07 00:52:23,735 INFO L262 CegarLoopResult]: At program point L13-4(line 13) the Hoare annotation is: (not (= main_~p1~0.base main_~p2~0.base)) [2020-11-07 00:52:23,736 INFO L262 CegarLoopResult]: At program point L13-5(line 13) the Hoare annotation is: (not (= main_~p1~0.base main_~p2~0.base)) [2020-11-07 00:52:23,736 INFO L262 CegarLoopResult]: At program point L13-6(line 13) the Hoare annotation is: false [2020-11-07 00:52:23,736 INFO L262 CegarLoopResult]: At program point L13-7(line 13) the Hoare annotation is: false [2020-11-07 00:52:23,736 INFO L262 CegarLoopResult]: At program point L13-8(line 13) the Hoare annotation is: false [2020-11-07 00:52:23,736 INFO L262 CegarLoopResult]: At program point L13-9(line 13) the Hoare annotation is: false [2020-11-07 00:52:23,736 INFO L262 CegarLoopResult]: At program point mainENTRY(lines 12 30) the Hoare annotation is: (and (= ~q~0 |old(~q~0)|) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-11-07 00:52:23,737 INFO L262 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: false [2020-11-07 00:52:23,737 INFO L262 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (and (not (= main_~p1~0.base main_~p2~0.base)) (= (select (select |#memory_int| |main_~#a~0.base|) |main_~#a~0.offset|) 0) (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select |#valid| |main_~#a~0.base|) 1) (= main_~p1~0.base |main_~#a~0.base|)) [2020-11-07 00:52:23,737 INFO L262 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (and (not (= main_~p1~0.base main_~p2~0.base)) (= (select (select |#memory_int| |main_~#a~0.base|) |main_~#a~0.offset|) 0) (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select |#valid| |main_~#a~0.base|) 1) (= main_~p1~0.base |main_~#a~0.base|)) [2020-11-07 00:52:23,738 INFO L262 CegarLoopResult]: At program point L22-1(lines 22 24) the Hoare annotation is: (and (not (= main_~p1~0.base main_~p2~0.base)) (= (select (select |#memory_int| |main_~#a~0.base|) |main_~#a~0.offset|) 0) (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= |main_#t~mem8| 0) (= (select |#valid| |main_~#a~0.base|) 1) (= main_~p1~0.base |main_~#a~0.base|)) [2020-11-07 00:52:23,738 INFO L262 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (and (not (= main_~p1~0.base main_~p2~0.base)) (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select |#valid| |main_~#a~0.base|) 1) (= main_~p1~0.base |main_~#a~0.base|)) [2020-11-07 00:52:23,738 INFO L262 CegarLoopResult]: At program point L22-2(line 22) the Hoare annotation is: false [2020-11-07 00:52:23,738 INFO L262 CegarLoopResult]: At program point L20-1(line 20) the Hoare annotation is: (and (not (= main_~p1~0.base main_~p2~0.base)) (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select |#valid| |main_~#a~0.base|) 1) (= |main_#t~ret7| 0) (= main_~p1~0.base |main_~#a~0.base|)) [2020-11-07 00:52:23,738 INFO L262 CegarLoopResult]: At program point L22-3(line 22) the Hoare annotation is: (and (not (= main_~p1~0.base main_~p2~0.base)) (= (select (select |#memory_int| |main_~#a~0.base|) |main_~#a~0.offset|) 0) (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= |main_#t~mem8| 0) (= (select |#valid| |main_~#a~0.base|) 1) (= main_~p1~0.base |main_~#a~0.base|)) [2020-11-07 00:52:23,739 INFO L262 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select |#valid| |main_~#a~0.base|) 1) (= main_~p1~0.base |main_~#a~0.base|)) [2020-11-07 00:52:23,739 INFO L262 CegarLoopResult]: At program point L20-2(line 20) the Hoare annotation is: (and (not (= main_~p1~0.base main_~p2~0.base)) (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select |#valid| |main_~#a~0.base|) 1) (= |main_#t~ret7| 0) (= main_~p1~0.base |main_~#a~0.base|)) [2020-11-07 00:52:23,739 INFO L262 CegarLoopResult]: At program point L20-3(line 20) the Hoare annotation is: (and (not (= main_~p1~0.base main_~p2~0.base)) (= (select (select |#memory_int| |main_~#a~0.base|) |main_~#a~0.offset|) 0) (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select |#valid| |main_~#a~0.base|) 1) (= |main_#t~ret7| 0) (= main_~p1~0.base |main_~#a~0.base|)) [2020-11-07 00:52:23,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:52:23 BoogieIcfgContainer [2020-11-07 00:52:23,759 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 00:52:23,762 INFO L168 Benchmark]: Toolchain (without parser) took 2695.38 ms. Allocated memory is still 151.0 MB. Free memory was 128.2 MB in the beginning and 63.5 MB in the end (delta: 64.7 MB). Peak memory consumption was 65.5 MB. Max. memory is 8.0 GB. [2020-11-07 00:52:23,763 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 125.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:52:23,764 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.66 ms. Allocated memory is still 151.0 MB. Free memory was 127.6 MB in the beginning and 117.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-07 00:52:23,765 INFO L168 Benchmark]: Boogie Preprocessor took 34.78 ms. Allocated memory is still 151.0 MB. Free memory was 117.9 MB in the beginning and 116.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-07 00:52:23,766 INFO L168 Benchmark]: RCFGBuilder took 503.23 ms. Allocated memory is still 151.0 MB. Free memory was 116.6 MB in the beginning and 101.2 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-11-07 00:52:23,767 INFO L168 Benchmark]: TraceAbstraction took 1870.58 ms. Allocated memory is still 151.0 MB. Free memory was 100.7 MB in the beginning and 63.5 MB in the end (delta: 37.2 MB). Peak memory consumption was 38.2 MB. Max. memory is 8.0 GB. [2020-11-07 00:52:23,771 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 151.0 MB. Free memory is still 125.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 272.66 ms. Allocated memory is still 151.0 MB. Free memory was 127.6 MB in the beginning and 117.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.78 ms. Allocated memory is still 151.0 MB. Free memory was 117.9 MB in the beginning and 116.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 503.23 ms. Allocated memory is still 151.0 MB. Free memory was 116.6 MB in the beginning and 101.2 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1870.58 ms. Allocated memory is still 151.0 MB. Free memory was 100.7 MB in the beginning and 63.5 MB in the end (delta: 37.2 MB). Peak memory consumption was 38.2 MB. Max. memory is 8.0 GB. * 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: 12]: Loop Invariant Derived loop invariant: 0 - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 6]: Procedure Contract for f Derived contract for procedure f: ((p2 == p2 && (p1 == p2 || \result <= 0)) && 0 <= \result) && p1 == p1 - ProcedureContractResult [Line: 12]: Procedure Contract for main Derived contract for procedure main: !(p1 == p2) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 53 SDslu, 163 SDs, 0 SdLazy, 128 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred 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, 51 LocationsWithAnnotation, 51 PreInvPairs, 55 NumberOfFragments, 398 HoareAnnotationTreeSize, 51 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 51 FomulaSimplificationsInter, 190 FormulaSimplificationTreeSizeReductionInter, 0.3s 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...