/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/loops/sum03-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:17:43,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:17:43,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:17:43,361 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 21:17:43,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:17:43,395 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:17:43,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:17:43,399 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:17:43,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:17:43,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:17:43,414 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:17:43,421 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:17:43,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:17:43,426 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:17:43,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:17:43,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:17:43,441 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 21:17:43,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:17:43,456 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:17:43,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:17:43,458 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 21:17:43,483 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:17:43,483 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:17:43,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:17:43,488 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:17:43,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:17:43,489 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:17:43,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:17:43,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:17:43,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:17:43,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:17:43,491 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:17:43,491 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:17:43,491 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:17:43,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:17:43,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:17:43,492 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:17:43,493 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:17:43,493 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:17:43,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:17:43,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:17:43,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:17:43,494 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:17:43,494 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:17:43,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:17:43,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:17:44,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:17:44,005 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:17:44,005 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:17:44,006 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum03-2.i [2021-02-21 21:17:44,095 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf115379f/df250f7246284800bb99bb840ec74863/FLAGc9183c2ed [2021-02-21 21:17:44,756 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:17:44,757 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum03-2.i [2021-02-21 21:17:44,764 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf115379f/df250f7246284800bb99bb840ec74863/FLAGc9183c2ed [2021-02-21 21:17:45,127 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf115379f/df250f7246284800bb99bb840ec74863 [2021-02-21 21:17:45,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:17:45,145 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:17:45,147 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:17:45,147 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:17:45,151 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:17:45,152 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:17:45" (1/1) ... [2021-02-21 21:17:45,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@406d052e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:45, skipping insertion in model container [2021-02-21 21:17:45,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:17:45" (1/1) ... [2021-02-21 21:17:45,163 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:17:45,180 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:17:45,339 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum03-2.i[807,820] [2021-02-21 21:17:45,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:17:45,362 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:17:45,376 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum03-2.i[807,820] [2021-02-21 21:17:45,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:17:45,396 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:17:45,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:45 WrapperNode [2021-02-21 21:17:45,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:17:45,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:17:45,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:17:45,398 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:17:45,408 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:45" (1/1) ... [2021-02-21 21:17:45,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:45" (1/1) ... [2021-02-21 21:17:45,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:45" (1/1) ... [2021-02-21 21:17:45,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:45" (1/1) ... [2021-02-21 21:17:45,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:45" (1/1) ... [2021-02-21 21:17:45,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:45" (1/1) ... [2021-02-21 21:17:45,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:45" (1/1) ... [2021-02-21 21:17:45,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:17:45,429 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:17:45,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:17:45,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:17:45,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:45" (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 [2021-02-21 21:17:45,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:17:45,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:17:45,545 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:17:45,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 21:17:45,546 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:17:45,546 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:17:45,546 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:17:45,546 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-21 21:17:45,547 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-21 21:17:45,547 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:17:45,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:17:45,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 21:17:45,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-02-21 21:17:45,548 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:17:45,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:17:45,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:17:45,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:17:45,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:17:45,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:17:45,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:17:45,869 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:17:45,869 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-21 21:17:45,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:17:45 BoogieIcfgContainer [2021-02-21 21:17:45,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:17:45,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:17:45,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:17:45,885 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:17:45,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:17:45" (1/3) ... [2021-02-21 21:17:45,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b86ab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:17:45, skipping insertion in model container [2021-02-21 21:17:45,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:45" (2/3) ... [2021-02-21 21:17:45,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b86ab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:17:45, skipping insertion in model container [2021-02-21 21:17:45,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:17:45" (3/3) ... [2021-02-21 21:17:45,899 INFO L111 eAbstractionObserver]: Analyzing ICFG sum03-2.i [2021-02-21 21:17:45,906 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:17:45,911 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:17:45,930 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:17:45,955 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:17:45,955 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:17:45,955 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:17:45,956 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:17:45,956 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:17:45,956 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:17:45,956 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:17:45,956 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:17:45,972 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2021-02-21 21:17:45,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-21 21:17:45,982 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:17:45,983 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] [2021-02-21 21:17:45,983 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:17:45,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:17:45,990 INFO L82 PathProgramCache]: Analyzing trace with hash -697030098, now seen corresponding path program 1 times [2021-02-21 21:17:46,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:17:46,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491480539] [2021-02-21 21:17:46,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:17:46,086 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:17:46,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:46,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:46,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:46,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:46,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:17:46,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:46,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:17:46,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:46,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 21:17:46,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:46,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 21:17:46,475 WARN L141 QuantifierPusher]: treesize reduction 23, result has 82.4 percent of original size [2021-02-21 21:17:46,481 WARN L147 QuantifierPusher]: treesize reduction 23, result has 82.4 percent of original size 108 [2021-02-21 21:17:46,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:46,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:17:46,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:46,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:17:46,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:46,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:46,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:17:46,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:46,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:46,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:46,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:17:46,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491480539] [2021-02-21 21:17:46,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:17:46,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 21:17:46,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022787350] [2021-02-21 21:17:46,690 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 21:17:46,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:17:46,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 21:17:46,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 21:17:46,709 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 10 states. [2021-02-21 21:17:47,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:17:47,186 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions. [2021-02-21 21:17:47,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 21:17:47,188 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2021-02-21 21:17:47,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:17:47,196 INFO L225 Difference]: With dead ends: 58 [2021-02-21 21:17:47,197 INFO L226 Difference]: Without dead ends: 41 [2021-02-21 21:17:47,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-02-21 21:17:47,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-02-21 21:17:47,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2021-02-21 21:17:47,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-02-21 21:17:47,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2021-02-21 21:17:47,254 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 26 [2021-02-21 21:17:47,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:17:47,255 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2021-02-21 21:17:47,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 21:17:47,255 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2021-02-21 21:17:47,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-21 21:17:47,257 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:17:47,257 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:17:47,257 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:17:47,257 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:17:47,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:17:47,259 INFO L82 PathProgramCache]: Analyzing trace with hash 326277956, now seen corresponding path program 1 times [2021-02-21 21:17:47,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:17:47,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765957810] [2021-02-21 21:17:47,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:17:48,066 WARN L202 SmtUtils]: Spent 782.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 91 [2021-02-21 21:17:48,080 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:17:48,082 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:17:48,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:48,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:48,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:48,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:48,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:17:48,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:48,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:17:48,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:48,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 21:17:48,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:48,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 21:17:48,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:48,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 21:17:48,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:48,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 21:17:48,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:48,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 21:17:48,254 WARN L141 QuantifierPusher]: treesize reduction 23, result has 82.4 percent of original size [2021-02-21 21:17:48,257 WARN L147 QuantifierPusher]: treesize reduction 23, result has 82.4 percent of original size 108 [2021-02-21 21:17:48,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:48,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:17:48,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:48,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:17:48,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:48,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:48,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:17:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:48,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:48,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:48,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-02-21 21:17:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:48,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:48,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:48,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:17:48,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765957810] [2021-02-21 21:17:48,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:17:48,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-21 21:17:48,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730735456] [2021-02-21 21:17:48,423 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-21 21:17:48,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:17:48,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-21 21:17:48,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-02-21 21:17:48,425 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 13 states. [2021-02-21 21:17:48,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:17:48,903 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2021-02-21 21:17:48,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-21 21:17:48,903 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2021-02-21 21:17:48,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:17:48,904 INFO L225 Difference]: With dead ends: 39 [2021-02-21 21:17:48,905 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 21:17:48,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2021-02-21 21:17:48,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 21:17:48,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 21:17:48,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 21:17:48,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 21:17:48,908 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2021-02-21 21:17:48,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:17:48,908 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 21:17:48,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-21 21:17:48,908 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 21:17:48,908 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 21:17:48,909 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:17:48,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 21:17:49,405 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-21 21:17:49,405 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-21 21:17:49,405 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-21 21:17:49,406 INFO L189 CegarLoopUtils]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-02-21 21:17:49,406 INFO L189 CegarLoopUtils]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-02-21 21:17:49,406 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 21:17:49,406 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-21 21:17:49,407 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2021-02-21 21:17:49,407 INFO L192 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: true [2021-02-21 21:17:49,407 INFO L192 CegarLoopUtils]: At program point L12-1(line 12) the Hoare annotation is: true [2021-02-21 21:17:49,408 INFO L192 CegarLoopUtils]: At program point L12-2(line 12) the Hoare annotation is: true [2021-02-21 21:17:49,408 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2021-02-21 21:17:49,408 INFO L192 CegarLoopUtils]: At program point L12-3(line 12) the Hoare annotation is: true [2021-02-21 21:17:49,408 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-21 21:17:49,408 INFO L185 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: false [2021-02-21 21:17:49,408 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 21:17:49,409 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 21:17:49,409 INFO L185 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: false [2021-02-21 21:17:49,409 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 20 29) the Hoare annotation is: true [2021-02-21 21:17:49,409 INFO L185 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: (let ((.cse0 (* 2 main_~x~0))) (and (<= .cse0 main_~sn~0) (<= main_~sn~0 .cse0))) [2021-02-21 21:17:49,409 INFO L185 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: (let ((.cse0 (+ (* 2 main_~x~0) 2))) (and (<= .cse0 main_~sn~0) (<= main_~sn~0 .cse0))) [2021-02-21 21:17:49,410 INFO L185 CegarLoopUtils]: At program point L27-1(lines 24 28) the Hoare annotation is: (let ((.cse0 (* 2 main_~x~0))) (and (<= .cse0 main_~sn~0) (<= main_~sn~0 .cse0))) [2021-02-21 21:17:49,410 INFO L185 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: (let ((.cse0 (* 2 main_~x~0))) (and (<= .cse0 main_~sn~0) (<= main_~sn~0 .cse0))) [2021-02-21 21:17:49,410 INFO L185 CegarLoopUtils]: At program point L26-1(line 26) the Hoare annotation is: (let ((.cse0 (+ (* 2 |main_#t~post5|) 2)) (.cse1 (+ (* 2 main_~x~0) 2))) (and (<= main_~sn~0 .cse0) (<= .cse1 main_~sn~0) (<= .cse0 main_~sn~0) (<= main_~sn~0 .cse1))) [2021-02-21 21:17:49,410 INFO L185 CegarLoopUtils]: At program point mainEXIT(lines 20 29) the Hoare annotation is: false [2021-02-21 21:17:49,410 INFO L185 CegarLoopUtils]: At program point L26-2(line 26) the Hoare annotation is: (let ((.cse1 (+ (* 2 |main_#t~post5|) 2)) (.cse0 (* 2 main_~x~0))) (and (<= .cse0 main_~sn~0) (<= main_~sn~0 .cse1) (<= .cse1 main_~sn~0) (<= main_~sn~0 .cse0))) [2021-02-21 21:17:49,410 INFO L185 CegarLoopUtils]: At program point L23(line 23) the Hoare annotation is: (= main_~sn~0 0) [2021-02-21 21:17:49,411 INFO L185 CegarLoopUtils]: At program point L22(line 22) the Hoare annotation is: (= main_~sn~0 0) [2021-02-21 21:17:49,411 INFO L185 CegarLoopUtils]: At program point L24-2(lines 20 29) the Hoare annotation is: false [2021-02-21 21:17:49,411 INFO L185 CegarLoopUtils]: At program point L22-1(line 22) the Hoare annotation is: (= main_~sn~0 0) [2021-02-21 21:17:49,411 INFO L185 CegarLoopUtils]: At program point L22-2(line 22) the Hoare annotation is: (= main_~sn~0 0) [2021-02-21 21:17:49,411 INFO L185 CegarLoopUtils]: At program point L22-3(line 22) the Hoare annotation is: (= main_~sn~0 0) [2021-02-21 21:17:49,415 INFO L185 CegarLoopUtils]: At program point L15(line 15) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:17:49,415 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 13 18) the Hoare annotation is: true [2021-02-21 21:17:49,415 INFO L185 CegarLoopUtils]: At program point L14(lines 14 16) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-21 21:17:49,415 INFO L185 CegarLoopUtils]: At program point L15-1(line 15) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:17:49,416 INFO L185 CegarLoopUtils]: At program point L14-2(lines 13 18) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-21 21:17:49,416 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 13 18) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-21 21:17:49,416 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:17:49,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:17:49 BoogieIcfgContainer [2021-02-21 21:17:49,436 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:17:49,440 INFO L168 Benchmark]: Toolchain (without parser) took 4305.24 ms. Allocated memory was 169.9 MB in the beginning and 204.5 MB in the end (delta: 34.6 MB). Free memory was 145.5 MB in the beginning and 77.1 MB in the end (delta: 68.5 MB). Peak memory consumption was 103.7 MB. Max. memory is 8.0 GB. [2021-02-21 21:17:49,442 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 169.9 MB. Free memory is still 156.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:17:49,443 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.19 ms. Allocated memory is still 169.9 MB. Free memory was 144.4 MB in the beginning and 135.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 21:17:49,450 INFO L168 Benchmark]: Boogie Preprocessor took 31.12 ms. Allocated memory is still 169.9 MB. Free memory was 135.0 MB in the beginning and 133.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 21:17:49,451 INFO L168 Benchmark]: RCFGBuilder took 445.25 ms. Allocated memory is still 169.9 MB. Free memory was 133.6 MB in the beginning and 145.9 MB in the end (delta: -12.4 MB). Peak memory consumption was 13.1 MB. Max. memory is 8.0 GB. [2021-02-21 21:17:49,455 INFO L168 Benchmark]: TraceAbstraction took 3557.05 ms. Allocated memory was 169.9 MB in the beginning and 204.5 MB in the end (delta: 34.6 MB). Free memory was 145.6 MB in the beginning and 77.1 MB in the end (delta: 68.5 MB). Peak memory consumption was 103.2 MB. Max. memory is 8.0 GB. [2021-02-21 21:17:49,463 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 169.9 MB. Free memory is still 156.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 250.19 ms. Allocated memory is still 169.9 MB. Free memory was 144.4 MB in the beginning and 135.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.12 ms. Allocated memory is still 169.9 MB. Free memory was 135.0 MB in the beginning and 133.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 445.25 ms. Allocated memory is still 169.9 MB. Free memory was 133.6 MB in the beginning and 145.9 MB in the end (delta: -12.4 MB). Peak memory consumption was 13.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3557.05 ms. Allocated memory was 169.9 MB in the beginning and 204.5 MB in the end (delta: 34.6 MB). Free memory was 145.6 MB in the beginning and 77.1 MB in the end (delta: 68.5 MB). Peak memory consumption was 103.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 2 * x <= sn && sn <= 2 * x - ProcedureContractResult [Line: 20]: Procedure Contract for main Derived contract for procedure main: 0 - ProcedureContractResult [Line: 13]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 44 SDtfs, 61 SDslu, 148 SDs, 0 SdLazy, 202 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=1, 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 34 LocationsWithAnnotation, 48 PreInvPairs, 64 NumberOfFragments, 191 HoareAnnotationTreeSize, 48 FomulaSimplifications, 265 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 34 FomulaSimplificationsInter, 633 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...