/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/loop-lit/css2003.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:58:30,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:58:30,988 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:58:31,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 18:58:31,059 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 18:58:31,067 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 18:58:31,089 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 18:58:31,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 18:58:31,108 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 18:58:31,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 18:58:31,121 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 18:58:31,126 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 18:58:31,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:58:31,133 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:58:31,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:58:31,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:58:31,139 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:58:31,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:58:31,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:58:31,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:58:31,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:58:31,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:58:31,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:58:31,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:58:31,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 18:58:31,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 18:58:31,165 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 18:58:31,166 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 18:58:31,167 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 18:58:31,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 18:58:31,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 18:58:31,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 18:58:31,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 18:58:31,176 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 18:58:31,177 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 18:58:31,178 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 18:58:31,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 18:58:31,180 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 18:58:31,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:58:31,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:58:31,184 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:58:31,186 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 18:58:31,205 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:58:31,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:58:31,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:58:31,209 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:58:31,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:58:31,209 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:58:31,209 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:58:31,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:58:31,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:58:31,210 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:58:31,210 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:58:31,211 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:58:31,211 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:58:31,211 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:58:31,212 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:58:31,212 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:58:31,212 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:58:31,212 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:58:31,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:58:31,213 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:58:31,213 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:58:31,214 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:58:31,214 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:58:31,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:58:31,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:58:31,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:58:31,959 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:58:31,960 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:58:31,962 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/css2003.i [2021-02-23 18:58:32,097 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74cff73a4/95d809c4f1e84939a980669a56f7e8a9/FLAGd4dc33e25 [2021-02-23 18:58:33,207 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:58:33,208 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/css2003.i [2021-02-23 18:58:33,221 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74cff73a4/95d809c4f1e84939a980669a56f7e8a9/FLAGd4dc33e25 [2021-02-23 18:58:33,254 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74cff73a4/95d809c4f1e84939a980669a56f7e8a9 [2021-02-23 18:58:33,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:58:33,283 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:58:33,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:58:33,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:58:33,296 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:58:33,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:58:33" (1/1) ... [2021-02-23 18:58:33,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ff37125 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:58:33, skipping insertion in model container [2021-02-23 18:58:33,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:58:33" (1/1) ... [2021-02-23 18:58:33,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:58:33,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:58:33,553 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] [2021-02-23 18:58:33,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:58:33,595 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:58:33,620 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] [2021-02-23 18:58:33,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:58:33,653 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:58:33,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:58:33 WrapperNode [2021-02-23 18:58:33,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:58:33,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:58:33,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:58:33,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:58:33,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:58:33" (1/1) ... [2021-02-23 18:58:33,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:58:33" (1/1) ... [2021-02-23 18:58:33,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:58:33" (1/1) ... [2021-02-23 18:58:33,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:58:33" (1/1) ... [2021-02-23 18:58:33,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:58:33" (1/1) ... [2021-02-23 18:58:33,713 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:58:33" (1/1) ... [2021-02-23 18:58:33,715 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:58:33" (1/1) ... [2021-02-23 18:58:33,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:58:33,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:58:33,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:58:33,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:58:33,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:58:33" (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 [2021-02-23 18:58:33,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:58:33,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:58:33,889 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:58:33,890 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 18:58:33,890 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 18:58:33,890 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:58:33,891 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:58:33,891 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:58:33,891 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-23 18:58:33,892 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-23 18:58:33,892 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:58:33,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:58:33,892 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 18:58:33,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 18:58:33,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:58:33,893 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:58:33,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:58:33,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:58:33,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:58:33,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:58:33,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:58:33,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:58:34,456 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:58:34,457 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-23 18:58:34,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:58:34 BoogieIcfgContainer [2021-02-23 18:58:34,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:58:34,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:58:34,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:58:34,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:58:34,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:58:33" (1/3) ... [2021-02-23 18:58:34,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b41687d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:58:34, skipping insertion in model container [2021-02-23 18:58:34,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:58:33" (2/3) ... [2021-02-23 18:58:34,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b41687d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:58:34, skipping insertion in model container [2021-02-23 18:58:34,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:58:34" (3/3) ... [2021-02-23 18:58:34,478 INFO L111 eAbstractionObserver]: Analyzing ICFG css2003.i [2021-02-23 18:58:34,494 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:58:34,502 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:58:34,534 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:58:34,588 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:58:34,589 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:58:34,589 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:58:34,589 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:58:34,590 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:58:34,590 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:58:34,591 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:58:34,591 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:58:34,628 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2021-02-23 18:58:34,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-23 18:58:34,652 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:58:34,654 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] [2021-02-23 18:58:34,656 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:58:34,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:58:34,671 INFO L82 PathProgramCache]: Analyzing trace with hash 272548324, now seen corresponding path program 1 times [2021-02-23 18:58:34,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:58:34,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034079814] [2021-02-23 18:58:34,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:58:34,847 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:58:35,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:58:35,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:35,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:58:35,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:35,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:58:35,313 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-23 18:58:35,316 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-23 18:58:35,360 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:35,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-23 18:58:35,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:35,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-23 18:58:35,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:35,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:58:35,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:35,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:58:35,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:35,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:58:35,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:58:35,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:58:35,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:58:35,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:58:35,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:58:35,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034079814] [2021-02-23 18:58:35,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:58:35,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 18:58:35,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343207106] [2021-02-23 18:58:35,655 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 18:58:35,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:58:35,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 18:58:35,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 18:58:35,684 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 9 states. [2021-02-23 18:58:36,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:58:36,254 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2021-02-23 18:58:36,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 18:58:36,259 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2021-02-23 18:58:36,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:58:36,284 INFO L225 Difference]: With dead ends: 56 [2021-02-23 18:58:36,285 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 18:58:36,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-02-23 18:58:36,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 18:58:36,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 18:58:36,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 18:58:36,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 18:58:36,426 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2021-02-23 18:58:36,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:58:36,433 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 18:58:36,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 18:58:36,433 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 18:58:36,433 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 18:58:36,434 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:58:36,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 18:58:37,347 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-23 18:58:37,348 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-23 18:58:37,348 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-23 18:58:37,348 INFO L189 CegarLoopUtils]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-02-23 18:58:37,348 INFO L189 CegarLoopUtils]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-02-23 18:58:37,349 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 18:58:37,349 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-23 18:58:37,349 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2021-02-23 18:58:37,349 INFO L192 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: true [2021-02-23 18:58:37,349 INFO L192 CegarLoopUtils]: At program point L12-1(line 12) the Hoare annotation is: true [2021-02-23 18:58:37,350 INFO L192 CegarLoopUtils]: At program point L12-2(line 12) the Hoare annotation is: true [2021-02-23 18:58:37,350 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)|)) [2021-02-23 18:58:37,350 INFO L192 CegarLoopUtils]: At program point L12-3(line 12) the Hoare annotation is: true [2021-02-23 18:58:37,350 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-23 18:58:37,351 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-23 18:58:37,351 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 18:58:37,351 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 18:58:37,351 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-23 18:58:37,351 INFO L189 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-02-23 18:58:37,352 INFO L189 CegarLoopUtils]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-02-23 18:58:37,352 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-02-23 18:58:37,352 INFO L189 CegarLoopUtils]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2021-02-23 18:58:37,352 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-02-23 18:58:37,353 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))) [2021-02-23 18:58:37,353 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))) [2021-02-23 18:58:37,353 INFO L185 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: (= main_~i~0 1) [2021-02-23 18:58:37,354 INFO L185 CegarLoopUtils]: At program point L29-1(line 29) the Hoare annotation is: (= main_~i~0 1) [2021-02-23 18:58:37,354 INFO L185 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: (= main_~i~0 1) [2021-02-23 18:58:37,354 INFO L192 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: true [2021-02-23 18:58:37,355 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)) [2021-02-23 18:58:37,355 INFO L192 CegarLoopUtils]: At program point L25-1(line 25) the Hoare annotation is: true [2021-02-23 18:58:37,355 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)) [2021-02-23 18:58:37,356 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))) [2021-02-23 18:58:37,356 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))) [2021-02-23 18:58:37,356 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))) [2021-02-23 18:58:37,356 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 24 37) the Hoare annotation is: true [2021-02-23 18:58:37,357 INFO L185 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: (= main_~i~0 1) [2021-02-23 18:58:37,357 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))) [2021-02-23 18:58:37,357 INFO L185 CegarLoopUtils]: At program point L28-1(line 28) the Hoare annotation is: (= main_~i~0 1) [2021-02-23 18:58:37,358 INFO L192 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: true [2021-02-23 18:58:37,358 INFO L185 CegarLoopUtils]: At program point L28-2(line 28) the Hoare annotation is: (= main_~i~0 1) [2021-02-23 18:58:37,358 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))) [2021-02-23 18:58:37,359 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-02-23 18:58:37,359 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))) [2021-02-23 18:58:37,359 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-23 18:58:37,359 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-23 18:58:37,360 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))) [2021-02-23 18:58:37,360 INFO L185 CegarLoopUtils]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-23 18:58:37,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:58:37 BoogieIcfgContainer [2021-02-23 18:58:37,393 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:58:37,396 INFO L168 Benchmark]: Toolchain (without parser) took 4127.86 ms. Allocated memory was 167.8 MB in the beginning and 201.3 MB in the end (delta: 33.6 MB). Free memory was 144.2 MB in the beginning and 156.1 MB in the end (delta: -12.0 MB). Peak memory consumption was 90.4 MB. Max. memory is 8.0 GB. [2021-02-23 18:58:37,397 INFO L168 Benchmark]: CDTParser took 0.65 ms. Allocated memory is still 167.8 MB. Free memory is still 140.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:58:37,399 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.46 ms. Allocated memory is still 167.8 MB. Free memory was 143.1 MB in the beginning and 133.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 18:58:37,400 INFO L168 Benchmark]: Boogie Preprocessor took 62.56 ms. Allocated memory is still 167.8 MB. Free memory was 133.5 MB in the beginning and 132.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:58:37,401 INFO L168 Benchmark]: RCFGBuilder took 741.12 ms. Allocated memory is still 167.8 MB. Free memory was 132.0 MB in the beginning and 147.4 MB in the end (delta: -15.5 MB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. [2021-02-23 18:58:37,403 INFO L168 Benchmark]: TraceAbstraction took 2927.94 ms. Allocated memory was 167.8 MB in the beginning and 201.3 MB in the end (delta: 33.6 MB). Free memory was 146.9 MB in the beginning and 156.1 MB in the end (delta: -9.2 MB). Peak memory consumption was 92.0 MB. Max. memory is 8.0 GB. [2021-02-23 18:58:37,408 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.65 ms. Allocated memory is still 167.8 MB. Free memory is still 140.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 368.46 ms. Allocated memory is still 167.8 MB. Free memory was 143.1 MB in the beginning and 133.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 62.56 ms. Allocated memory is still 167.8 MB. Free memory was 133.5 MB in the beginning and 132.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 741.12 ms. Allocated memory is still 167.8 MB. Free memory was 132.0 MB in the beginning and 147.4 MB in the end (delta: -15.5 MB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2927.94 ms. Allocated memory was 167.8 MB in the beginning and 201.3 MB in the end (delta: 33.6 MB). Free memory was 146.9 MB in the beginning and 156.1 MB in the end (delta: -9.2 MB). Peak memory consumption was 92.0 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: 1.8s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, 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, 0.5s 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, 0.2s HoareSimplificationTime, 38 FomulaSimplificationsInter, 655 FormulaSimplificationTreeSizeReductionInter, 0.6s 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...