/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/loop-lit/css2003.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 02:23:23,142 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 02:23:23,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 02:23:23,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 02:23:23,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 02:23:23,235 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 02:23:23,237 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 02:23:23,239 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 02:23:23,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 02:23:23,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 02:23:23,269 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 02:23:23,273 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 02:23:23,277 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 02:23:23,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 02:23:23,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 02:23:23,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 02:23:23,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 02:23:23,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 02:23:23,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 02:23:23,310 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 02:23:23,311 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 02:23:23,337 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 02:23:23,337 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 02:23:23,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 02:23:23,343 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 02:23:23,343 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 02:23:23,343 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 02:23:23,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 02:23:23,344 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 02:23:23,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 02:23:23,344 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 02:23:23,345 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 02:23:23,346 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 02:23:23,346 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 02:23:23,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 02:23:23,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 02:23:23,347 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 02:23:23,347 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 02:23:23,347 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 02:23:23,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:23:23,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 02:23:23,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 02:23:23,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 02:23:23,348 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 02:23:23,349 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 02:23:23,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 02:23:23,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 02:23:23,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 02:23:23,839 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 02:23:23,840 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 02:23:23,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/css2003.i [2021-02-22 02:23:23,917 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/114c68c9a/64e2a9bc61ee473da913d6a91a2ec4fd/FLAGba2541951 [2021-02-22 02:23:24,536 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 02:23:24,537 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/css2003.i [2021-02-22 02:23:24,545 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/114c68c9a/64e2a9bc61ee473da913d6a91a2ec4fd/FLAGba2541951 [2021-02-22 02:23:24,906 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/114c68c9a/64e2a9bc61ee473da913d6a91a2ec4fd [2021-02-22 02:23:24,912 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 02:23:24,927 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 02:23:24,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 02:23:24,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 02:23:24,938 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 02:23:24,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:23:24" (1/1) ... [2021-02-22 02:23:24,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bc072c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:23:24, skipping insertion in model container [2021-02-22 02:23:24,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:23:24" (1/1) ... [2021-02-22 02:23:24,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 02:23:24,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 02:23:25,183 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/css2003.i[895,908] [2021-02-22 02:23:25,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:23:25,207 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 02:23:25,224 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/css2003.i[895,908] [2021-02-22 02:23:25,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:23:25,257 INFO L208 MainTranslator]: Completed translation [2021-02-22 02:23:25,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:23:25 WrapperNode [2021-02-22 02:23:25,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 02:23:25,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 02:23:25,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 02:23:25,261 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 02:23:25,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:23:25" (1/1) ... [2021-02-22 02:23:25,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:23:25" (1/1) ... [2021-02-22 02:23:25,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:23:25" (1/1) ... [2021-02-22 02:23:25,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:23:25" (1/1) ... [2021-02-22 02:23:25,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:23:25" (1/1) ... [2021-02-22 02:23:25,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:23:25" (1/1) ... [2021-02-22 02:23:25,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:23:25" (1/1) ... [2021-02-22 02:23:25,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 02:23:25,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 02:23:25,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 02:23:25,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 02:23:25,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:23:25" (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 [2021-02-22 02:23:25,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 02:23:25,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 02:23:25,485 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 02:23:25,486 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-22 02:23:25,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-22 02:23:25,487 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 02:23:25,487 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 02:23:25,488 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 02:23:25,488 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-22 02:23:25,489 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-22 02:23:25,489 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 02:23:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 02:23:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-22 02:23:25,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-22 02:23:25,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 02:23:25,492 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 02:23:25,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 02:23:25,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 02:23:25,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 02:23:25,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 02:23:25,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 02:23:25,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 02:23:26,023 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 02:23:26,023 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-22 02:23:26,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:23:26 BoogieIcfgContainer [2021-02-22 02:23:26,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 02:23:26,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 02:23:26,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 02:23:26,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 02:23:26,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 02:23:24" (1/3) ... [2021-02-22 02:23:26,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7861da98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:23:26, skipping insertion in model container [2021-02-22 02:23:26,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:23:25" (2/3) ... [2021-02-22 02:23:26,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7861da98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:23:26, skipping insertion in model container [2021-02-22 02:23:26,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:23:26" (3/3) ... [2021-02-22 02:23:26,064 INFO L111 eAbstractionObserver]: Analyzing ICFG css2003.i [2021-02-22 02:23:26,078 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 02:23:26,084 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 02:23:26,107 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 02:23:26,133 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 02:23:26,133 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 02:23:26,133 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 02:23:26,133 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 02:23:26,134 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 02:23:26,134 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 02:23:26,134 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 02:23:26,134 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 02:23:26,151 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2021-02-22 02:23:26,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-22 02:23:26,162 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:23:26,163 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] [2021-02-22 02:23:26,164 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:23:26,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:23:26,171 INFO L82 PathProgramCache]: Analyzing trace with hash 272548324, now seen corresponding path program 1 times [2021-02-22 02:23:26,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:23:26,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85172673] [2021-02-22 02:23:26,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:23:26,265 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:23:26,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:23:26,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:23:26,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:23:26,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:23:26,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 02:23:26,577 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-22 02:23:26,581 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-22 02:23:26,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:23:26,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-22 02:23:26,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:23:26,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-22 02:23:26,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:23:26,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:23:26,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:23:26,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:23:26,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:23:26,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:23:26,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:23:26,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:23:26,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:23:26,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:23:26,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:23:26,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85172673] [2021-02-22 02:23:26,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:23:26,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-22 02:23:26,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654338821] [2021-02-22 02:23:26,786 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-22 02:23:26,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:23:26,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-22 02:23:26,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-22 02:23:26,803 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 9 states. [2021-02-22 02:23:27,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:23:27,288 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2021-02-22 02:23:27,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-22 02:23:27,290 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2021-02-22 02:23:27,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:23:27,300 INFO L225 Difference]: With dead ends: 56 [2021-02-22 02:23:27,300 INFO L226 Difference]: Without dead ends: 0 [2021-02-22 02:23:27,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-02-22 02:23:27,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-22 02:23:27,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-22 02:23:27,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-22 02:23:27,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-22 02:23:27,336 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2021-02-22 02:23:27,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:23:27,337 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-22 02:23:27,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-22 02:23:27,337 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-22 02:23:27,337 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-22 02:23:27,338 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 02:23:27,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-22 02:23:28,105 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-22 02:23:28,106 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-22 02:23:28,106 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-22 02:23:28,106 INFO L189 CegarLoopUtils]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-02-22 02:23:28,106 INFO L189 CegarLoopUtils]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-02-22 02:23:28,107 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-22 02:23:28,107 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-22 02:23:28,109 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2021-02-22 02:23:28,109 INFO L192 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: true [2021-02-22 02:23:28,110 INFO L192 CegarLoopUtils]: At program point L12-1(line 12) the Hoare annotation is: true [2021-02-22 02:23:28,111 INFO L192 CegarLoopUtils]: At program point L12-2(line 12) the Hoare annotation is: true [2021-02-22 02:23:28,112 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)|)) [2021-02-22 02:23:28,112 INFO L192 CegarLoopUtils]: At program point L12-3(line 12) the Hoare annotation is: true [2021-02-22 02:23:28,113 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-22 02:23:28,114 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-22 02:23:28,114 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-22 02:23:28,115 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-22 02:23:28,115 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-22 02:23:28,115 INFO L189 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-02-22 02:23:28,115 INFO L189 CegarLoopUtils]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-02-22 02:23:28,117 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-02-22 02:23:28,117 INFO L189 CegarLoopUtils]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2021-02-22 02:23:28,117 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-02-22 02:23:28,118 INFO L185 CegarLoopUtils]: At program point L33(line 33) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= 2 main_~i~0) (<= .cse0 3) (<= 2 .cse0))) [2021-02-22 02:23:28,118 INFO L185 CegarLoopUtils]: At program point L31(line 31) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= 2 main_~i~0) (<= .cse0 2) (<= 1 .cse0))) (and (<= main_~k~0 1) (<= 0 main_~k~0) (= main_~i~0 1))) [2021-02-22 02:23:28,119 INFO L185 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: (= main_~i~0 1) [2021-02-22 02:23:28,119 INFO L185 CegarLoopUtils]: At program point L29-1(line 29) the Hoare annotation is: (= main_~i~0 1) [2021-02-22 02:23:28,119 INFO L185 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: (= main_~i~0 1) [2021-02-22 02:23:28,119 INFO L192 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: true [2021-02-22 02:23:28,120 INFO L185 CegarLoopUtils]: At program point mainEXIT(lines 24 37) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= 2 main_~i~0) (<= .cse0 2) (<= 1 .cse0))) (= main_~i~0 1)) [2021-02-22 02:23:28,120 INFO L192 CegarLoopUtils]: At program point L25-1(line 25) the Hoare annotation is: true [2021-02-22 02:23:28,120 INFO L185 CegarLoopUtils]: At program point mainFINAL(lines 24 37) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= 2 main_~i~0) (<= .cse0 2) (<= 1 .cse0))) (= main_~i~0 1)) [2021-02-22 02:23:28,120 INFO L185 CegarLoopUtils]: At program point L34(line 34) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= 2 main_~i~0) (<= .cse0 2) (<= 1 .cse0))) [2021-02-22 02:23:28,121 INFO L185 CegarLoopUtils]: At program point L34-1(lines 30 35) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= 2 main_~i~0) (<= .cse0 2) (<= 1 .cse0))) (and (<= main_~k~0 1) (<= 0 main_~k~0) (= main_~i~0 1))) [2021-02-22 02:23:28,122 INFO L185 CegarLoopUtils]: At program point L32(line 32) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= 2 main_~i~0) (<= .cse0 3) (<= 2 .cse0))) [2021-02-22 02:23:28,126 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 24 37) the Hoare annotation is: true [2021-02-22 02:23:28,127 INFO L185 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: (= main_~i~0 1) [2021-02-22 02:23:28,128 INFO L185 CegarLoopUtils]: At program point L30-2(lines 30 35) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= 2 main_~i~0) (<= .cse0 2) (<= 1 .cse0))) [2021-02-22 02:23:28,128 INFO L185 CegarLoopUtils]: At program point L28-1(line 28) the Hoare annotation is: (= main_~i~0 1) [2021-02-22 02:23:28,134 INFO L192 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: true [2021-02-22 02:23:28,135 INFO L185 CegarLoopUtils]: At program point L28-2(line 28) the Hoare annotation is: (= main_~i~0 1) [2021-02-22 02:23:28,135 INFO L185 CegarLoopUtils]: At program point L18-2(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-22 02:23:28,135 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-02-22 02:23:28,135 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-22 02:23:28,136 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-22 02:23:28,136 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-22 02:23:28,137 INFO L185 CegarLoopUtils]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-22 02:23:28,137 INFO L185 CegarLoopUtils]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-22 02:23:28,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 02:23:28 BoogieIcfgContainer [2021-02-22 02:23:28,165 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 02:23:28,170 INFO L168 Benchmark]: Toolchain (without parser) took 3251.99 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 134.9 MB in the beginning and 147.9 MB in the end (delta: -13.0 MB). Peak memory consumption was 84.4 MB. Max. memory is 8.0 GB. [2021-02-22 02:23:28,172 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 158.3 MB. Free memory is still 132.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:23:28,173 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.11 ms. Allocated memory is still 158.3 MB. Free memory was 133.9 MB in the beginning and 124.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-22 02:23:28,175 INFO L168 Benchmark]: Boogie Preprocessor took 75.20 ms. Allocated memory is still 158.3 MB. Free memory was 124.3 MB in the beginning and 122.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-22 02:23:28,176 INFO L168 Benchmark]: RCFGBuilder took 689.84 ms. Allocated memory is still 158.3 MB. Free memory was 122.7 MB in the beginning and 140.4 MB in the end (delta: -17.6 MB). Peak memory consumption was 18.5 MB. Max. memory is 8.0 GB. [2021-02-22 02:23:28,178 INFO L168 Benchmark]: TraceAbstraction took 2115.30 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 139.9 MB in the beginning and 147.9 MB in the end (delta: -8.0 MB). Peak memory consumption was 89.0 MB. Max. memory is 8.0 GB. [2021-02-22 02:23:28,193 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 158.3 MB. Free memory is still 132.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 325.11 ms. Allocated memory is still 158.3 MB. Free memory was 133.9 MB in the beginning and 124.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 75.20 ms. Allocated memory is still 158.3 MB. Free memory was 124.3 MB in the beginning and 122.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 689.84 ms. Allocated memory is still 158.3 MB. Free memory was 122.7 MB in the beginning and 140.4 MB in the end (delta: -17.6 MB). Peak memory consumption was 18.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2115.30 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 139.9 MB in the beginning and 147.9 MB in the end (delta: -8.0 MB). Peak memory consumption was 89.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: 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: 30]: Loop Invariant Derived loop invariant: ((2 <= i && i + k <= 2) && 1 <= i + k) || ((k <= 1 && 0 <= k) && i == 1) - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: ((2 <= i && i + k <= 2) && 1 <= i + k) || i == 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 35 SDslu, 78 SDs, 0 SdLazy, 126 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 38 LocationsWithAnnotation, 45 PreInvPairs, 61 NumberOfFragments, 235 HoareAnnotationTreeSize, 45 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 38 FomulaSimplificationsInter, 655 FormulaSimplificationTreeSizeReductionInter, 0.5s 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...