/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-acceleration/simple_2-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 23:28:57,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 23:28:57,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 23:28:57,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 23:28:57,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 23:28:57,167 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 23:28:57,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 23:28:57,176 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 23:28:57,183 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 23:28:57,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 23:28:57,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 23:28:57,197 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 23:28:57,197 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 23:28:57,199 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 23:28:57,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 23:28:57,203 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 23:28:57,207 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 23:28:57,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 23:28:57,218 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 23:28:57,225 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 23:28:57,228 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 23:28:57,238 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 23:28:57,240 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 23:28:57,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 23:28:57,245 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-02 23:28:57,246 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-02 23:28:57,246 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-02 23:28:57,247 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-02 23:28:57,248 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-02 23:28:57,256 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-02 23:28:57,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-02 23:28:57,258 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-02 23:28:57,261 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-02 23:28:57,267 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-02 23:28:57,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-02 23:28:57,271 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-02 23:28:57,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-02 23:28:57,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-02 23:28:57,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 23:28:57,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 23:28:57,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 23:28:57,279 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-02 23:28:57,304 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 23:28:57,305 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 23:28:57,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 23:28:57,314 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 23:28:57,314 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 23:28:57,315 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 23:28:57,315 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 23:28:57,315 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 23:28:57,315 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 23:28:57,315 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 23:28:57,317 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 23:28:57,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 23:28:57,319 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 23:28:57,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 23:28:57,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 23:28:57,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 23:28:57,322 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 23:28:57,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 23:28:57,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 23:28:57,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 23:28:57,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-02 23:28:57,324 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 23:28:57,325 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-02 23:28:57,325 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 23:28:57,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 23:28:57,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 23:28:57,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 23:28:57,906 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 23:28:57,907 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 23:28:57,908 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_2-1.c [2021-05-02 23:28:57,990 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0deae4771/c1de80780558467fb6299eae259e95c2/FLAGb185b8fba [2021-05-02 23:28:58,594 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 23:28:58,594 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_2-1.c [2021-05-02 23:28:58,603 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0deae4771/c1de80780558467fb6299eae259e95c2/FLAGb185b8fba [2021-05-02 23:28:58,981 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0deae4771/c1de80780558467fb6299eae259e95c2 [2021-05-02 23:28:58,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 23:28:58,988 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 23:28:58,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 23:28:58,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 23:28:58,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 23:28:58,997 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:28:58" (1/1) ... [2021-05-02 23:28:58,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47e6fde6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:28:58, skipping insertion in model container [2021-05-02 23:28:58,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:28:58" (1/1) ... [2021-05-02 23:28:59,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 23:28:59,028 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 23:28:59,226 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_2-1.c[372,385] [2021-05-02 23:28:59,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 23:28:59,249 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 23:28:59,262 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_2-1.c[372,385] [2021-05-02 23:28:59,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 23:28:59,291 INFO L208 MainTranslator]: Completed translation [2021-05-02 23:28:59,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:28:59 WrapperNode [2021-05-02 23:28:59,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 23:28:59,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 23:28:59,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 23:28:59,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 23:28:59,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:28:59" (1/1) ... [2021-05-02 23:28:59,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:28:59" (1/1) ... [2021-05-02 23:28:59,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:28:59" (1/1) ... [2021-05-02 23:28:59,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:28:59" (1/1) ... [2021-05-02 23:28:59,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:28:59" (1/1) ... [2021-05-02 23:28:59,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:28:59" (1/1) ... [2021-05-02 23:28:59,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:28:59" (1/1) ... [2021-05-02 23:28:59,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 23:28:59,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 23:28:59,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 23:28:59,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 23:28:59,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:28:59" (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 [2021-05-02 23:28:59,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 23:28:59,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 23:28:59,462 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 23:28:59,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 23:28:59,463 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 23:28:59,463 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 23:28:59,464 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 23:28:59,464 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 23:28:59,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 23:28:59,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-05-02 23:28:59,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 23:28:59,465 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 23:28:59,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 23:28:59,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 23:28:59,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 23:28:59,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 23:28:59,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 23:28:59,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 23:28:59,743 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 23:28:59,743 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 23:28:59,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:28:59 BoogieIcfgContainer [2021-05-02 23:28:59,745 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 23:28:59,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 23:28:59,747 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 23:28:59,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 23:28:59,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 11:28:58" (1/3) ... [2021-05-02 23:28:59,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@671374d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:28:59, skipping insertion in model container [2021-05-02 23:28:59,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:28:59" (2/3) ... [2021-05-02 23:28:59,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@671374d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:28:59, skipping insertion in model container [2021-05-02 23:28:59,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:28:59" (3/3) ... [2021-05-02 23:28:59,770 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_2-1.c [2021-05-02 23:28:59,775 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-02 23:28:59,778 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 23:28:59,792 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 23:28:59,811 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 23:28:59,811 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 23:28:59,811 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-02 23:28:59,812 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 23:28:59,812 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 23:28:59,812 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 23:28:59,812 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 23:28:59,812 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 23:28:59,824 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 23:28:59,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 23:28:59,830 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:28:59,830 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:28:59,831 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:28:59,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:28:59,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1301225826, now seen corresponding path program 1 times [2021-05-02 23:28:59,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:28:59,843 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172322432] [2021-05-02 23:28:59,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:28:59,906 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:28:59,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:00,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:29:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:29:00,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:29:00,183 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:29:00,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172322432] [2021-05-02 23:29:00,185 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [172322432] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:29:00,185 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:29:00,185 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 23:29:00,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101475131] [2021-05-02 23:29:00,189 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 23:29:00,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:29:00,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 23:29:00,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-02 23:29:00,202 INFO L87 Difference]: Start difference. First operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:29:00,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:29:00,361 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2021-05-02 23:29:00,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 23:29:00,363 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-02 23:29:00,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:29:00,368 INFO L225 Difference]: With dead ends: 27 [2021-05-02 23:29:00,368 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 23:29:00,385 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 170.5ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-02 23:29:00,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 23:29:00,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 23:29:00,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-02 23:29:00,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 23:29:00,404 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-05-02 23:29:00,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:29:00,404 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 23:29:00,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:29:00,405 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 23:29:00,405 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 23:29:00,405 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 23:29:00,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 23:29:00,715 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-05-02 23:29:00,715 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-05-02 23:29:00,715 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-05-02 23:29:00,716 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2021-05-02 23:29:00,716 INFO L194 CegarLoopUtils]: 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|)) [2021-05-02 23:29:00,716 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-05-02 23:29:00,716 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-05-02 23:29:00,716 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-02 23:29:00,716 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-02 23:29:00,716 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-05-02 23:29:00,717 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 13 21) the Hoare annotation is: true [2021-05-02 23:29:00,717 INFO L194 CegarLoopUtils]: At program point mainEXIT(lines 13 21) the Hoare annotation is: (< (+ (* 4294967296 (div main_~x~0 4294967296)) 268435454) main_~x~0) [2021-05-02 23:29:00,717 INFO L201 CegarLoopUtils]: At program point L16-2(lines 16 18) the Hoare annotation is: true [2021-05-02 23:29:00,717 INFO L194 CegarLoopUtils]: At program point L16-3(lines 16 18) the Hoare annotation is: (< (+ (* 4294967296 (div main_~x~0 4294967296)) 268435454) main_~x~0) [2021-05-02 23:29:00,717 INFO L194 CegarLoopUtils]: At program point mainFINAL(lines 13 21) the Hoare annotation is: (< (+ (* 4294967296 (div main_~x~0 4294967296)) 268435454) main_~x~0) [2021-05-02 23:29:00,717 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2021-05-02 23:29:00,717 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 6 11) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-05-02 23:29:00,717 INFO L194 CegarLoopUtils]: At program point L8(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-05-02 23:29:00,718 INFO L194 CegarLoopUtils]: At program point L7(lines 7 9) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-05-02 23:29:00,718 INFO L194 CegarLoopUtils]: At program point L7-2(lines 6 11) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-05-02 23:29:00,718 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-05-02 23:29:00,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 11:29:00 BoogieIcfgContainer [2021-05-02 23:29:00,732 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 23:29:00,733 INFO L168 Benchmark]: Toolchain (without parser) took 1745.15 ms. Allocated memory is still 179.3 MB. Free memory was 143.8 MB in the beginning and 122.6 MB in the end (delta: 21.2 MB). Peak memory consumption was 22.1 MB. Max. memory is 8.0 GB. [2021-05-02 23:29:00,734 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 179.3 MB. Free memory is still 160.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 23:29:00,734 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.07 ms. Allocated memory is still 179.3 MB. Free memory was 143.6 MB in the beginning and 163.0 MB in the end (delta: -19.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. [2021-05-02 23:29:00,735 INFO L168 Benchmark]: Boogie Preprocessor took 77.73 ms. Allocated memory is still 179.3 MB. Free memory was 163.0 MB in the beginning and 160.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 23:29:00,736 INFO L168 Benchmark]: RCFGBuilder took 371.31 ms. Allocated memory is still 179.3 MB. Free memory was 160.9 MB in the beginning and 148.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-05-02 23:29:00,736 INFO L168 Benchmark]: TraceAbstraction took 985.70 ms. Allocated memory is still 179.3 MB. Free memory was 147.7 MB in the beginning and 122.6 MB in the end (delta: 25.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. [2021-05-02 23:29:00,739 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 179.3 MB. Free memory is still 160.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 301.07 ms. Allocated memory is still 179.3 MB. Free memory was 143.6 MB in the beginning and 163.0 MB in the end (delta: -19.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 77.73 ms. Allocated memory is still 179.3 MB. Free memory was 163.0 MB in the beginning and 160.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 371.31 ms. Allocated memory is still 179.3 MB. Free memory was 160.9 MB in the beginning and 148.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 985.70 ms. Allocated memory is still 179.3 MB. Free memory was 147.7 MB in the beginning and 122.6 MB in the end (delta: 25.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 597.0ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 9.2ms, AutomataDifference: 194.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 308.8ms, InitialAbstractionConstructionTime: 8.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 12 SDtfs, 13 SDslu, 23 SDs, 0 SdLazy, 24 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 35.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 170.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 7.0ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 18 LocationsWithAnnotation, 24 PreInvPairs, 31 NumberOfFragments, 97 HoareAnnotationTreeSize, 24 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 77.6ms HoareSimplificationTime, 18 FomulaSimplificationsInter, 296 FormulaSimplificationTreeSizeReductionInter, 218.4ms 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: 4294967296 * (x / 4294967296) + 268435454 < x - ProcedureContractResult [Line: 6]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) RESULT: Ultimate proved your program to be correct! Received shutdown request...