/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/sum01_bug02.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 21:46:08,210 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 21:46:08,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 21:46:08,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 21:46:08,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 21:46:08,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 21:46:08,254 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 21:46:08,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 21:46:08,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 21:46:08,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 21:46:08,262 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 21:46:08,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 21:46:08,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 21:46:08,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 21:46:08,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 21:46:08,269 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 21:46:08,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 21:46:08,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 21:46:08,281 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 21:46:08,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 21:46:08,285 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 21:46:08,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 21:46:08,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 21:46:08,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 21:46:08,293 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 21:46:08,293 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 21:46:08,294 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 21:46:08,295 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 21:46:08,296 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 21:46:08,297 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 21:46:08,297 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 21:46:08,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 21:46:08,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 21:46:08,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 21:46:08,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 21:46:08,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 21:46:08,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 21:46:08,304 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 21:46:08,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 21:46:08,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 21:46:08,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 21:46:08,321 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 21:46:08,345 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 21:46:08,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 21:46:08,349 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 21:46:08,352 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 21:46:08,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 21:46:08,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 21:46:08,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 21:46:08,353 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 21:46:08,353 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 21:46:08,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 21:46:08,354 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 21:46:08,354 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 21:46:08,354 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 21:46:08,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 21:46:08,355 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 21:46:08,355 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 21:46:08,355 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 21:46:08,355 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 21:46:08,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 21:46:08,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 21:46:08,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 21:46:08,358 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 21:46:08,358 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 21:46:08,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 21:46:08,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 21:46:08,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 21:46:08,857 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 21:46:08,858 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 21:46:08,859 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01_bug02.i [2020-10-23 21:46:08,937 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a7ccab94/5abb42f82de04a268c0c1b057569e05c/FLAGe4a0ba63b [2020-10-23 21:46:09,486 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 21:46:09,487 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01_bug02.i [2020-10-23 21:46:09,495 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a7ccab94/5abb42f82de04a268c0c1b057569e05c/FLAGe4a0ba63b [2020-10-23 21:46:09,842 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a7ccab94/5abb42f82de04a268c0c1b057569e05c [2020-10-23 21:46:09,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 21:46:09,854 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 21:46:09,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 21:46:09,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 21:46:09,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 21:46:09,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:46:09" (1/1) ... [2020-10-23 21:46:09,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@464bf060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:09, skipping insertion in model container [2020-10-23 21:46:09,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:46:09" (1/1) ... [2020-10-23 21:46:09,887 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 21:46:09,905 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 21:46:10,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:46:10,105 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 21:46:10,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:46:10,137 INFO L208 MainTranslator]: Completed translation [2020-10-23 21:46:10,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:10 WrapperNode [2020-10-23 21:46:10,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 21:46:10,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 21:46:10,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 21:46:10,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 21:46:10,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:10" (1/1) ... [2020-10-23 21:46:10,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:10" (1/1) ... [2020-10-23 21:46:10,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:10" (1/1) ... [2020-10-23 21:46:10,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:10" (1/1) ... [2020-10-23 21:46:10,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:10" (1/1) ... [2020-10-23 21:46:10,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:10" (1/1) ... [2020-10-23 21:46:10,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:10" (1/1) ... [2020-10-23 21:46:10,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 21:46:10,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 21:46:10,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 21:46:10,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 21:46:10,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 21:46:10,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 21:46:10,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 21:46:10,306 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 21:46:10,306 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 21:46:10,306 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 21:46:10,306 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 21:46:10,306 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 21:46:10,307 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-23 21:46:10,307 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-23 21:46:10,307 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 21:46:10,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 21:46:10,307 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 21:46:10,307 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-23 21:46:10,308 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 21:46:10,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 21:46:10,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 21:46:10,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 21:46:10,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 21:46:10,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 21:46:10,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 21:46:10,649 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 21:46:10,649 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 21:46:10,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:46:10 BoogieIcfgContainer [2020-10-23 21:46:10,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 21:46:10,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 21:46:10,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 21:46:10,661 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 21:46:10,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:46:09" (1/3) ... [2020-10-23 21:46:10,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63c1027d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:46:10, skipping insertion in model container [2020-10-23 21:46:10,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:10" (2/3) ... [2020-10-23 21:46:10,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63c1027d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:46:10, skipping insertion in model container [2020-10-23 21:46:10,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:46:10" (3/3) ... [2020-10-23 21:46:10,666 INFO L111 eAbstractionObserver]: Analyzing ICFG sum01_bug02.i [2020-10-23 21:46:10,678 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 21:46:10,689 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 21:46:10,703 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 21:46:10,727 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 21:46:10,727 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 21:46:10,727 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 21:46:10,727 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 21:46:10,727 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 21:46:10,728 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 21:46:10,728 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 21:46:10,728 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 21:46:10,744 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-10-23 21:46:10,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-23 21:46:10,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:46:10,754 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] [2020-10-23 21:46:10,755 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:46:10,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:46:10,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1030168209, now seen corresponding path program 1 times [2020-10-23 21:46:10,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:46:10,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504074166] [2020-10-23 21:46:10,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:46:10,846 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:46:10,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:46:11,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:46:11,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:46:11,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 21:46:11,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504074166] [2020-10-23 21:46:11,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:46:11,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 21:46:11,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076993706] [2020-10-23 21:46:11,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 21:46:11,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:46:11,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 21:46:11,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 21:46:11,160 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 6 states. [2020-10-23 21:46:11,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:46:11,659 INFO L93 Difference]: Finished difference Result 72 states and 84 transitions. [2020-10-23 21:46:11,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 21:46:11,661 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-10-23 21:46:11,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:46:11,670 INFO L225 Difference]: With dead ends: 72 [2020-10-23 21:46:11,670 INFO L226 Difference]: Without dead ends: 42 [2020-10-23 21:46:11,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-23 21:46:11,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-23 21:46:11,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-23 21:46:11,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-23 21:46:11,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2020-10-23 21:46:11,728 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 24 [2020-10-23 21:46:11,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:46:11,729 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2020-10-23 21:46:11,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 21:46:11,729 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-10-23 21:46:11,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-23 21:46:11,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:46:11,731 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 21:46:11,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 21:46:11,732 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:46:11,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:46:11,733 INFO L82 PathProgramCache]: Analyzing trace with hash 540023015, now seen corresponding path program 1 times [2020-10-23 21:46:11,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:46:11,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984046774] [2020-10-23 21:46:11,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:46:13,992 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation PRECISE [2020-10-23 21:46:14,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:46:14,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:46:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:46:14,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 21:46:14,884 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 120 [2020-10-23 21:46:15,282 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 115 [2020-10-23 21:46:15,547 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 109 [2020-10-23 21:47:08,545 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-10-23 21:47:08,547 ERROR L270 FreeRefinementEngine]: Caught known exception: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") [2020-10-23 21:47:08,547 WARN L340 FreeRefinementEngine]: Global settings require throwing the following exception [2020-10-23 21:47:08,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 21:47:08,548 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:226) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:153) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:934) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.MetaTraceTransformer.getInductiveFirstEntryOnly(MetaTraceTransformer.java:172) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.MetaTraceTransformer.getInductiveLoopInterpolants(MetaTraceTransformer.java:125) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:339) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:206) ... 39 more [2020-10-23 21:47:08,556 INFO L168 Benchmark]: Toolchain (without parser) took 58707.40 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 108.5 MB in the beginning and 93.2 MB in the end (delta: 15.3 MB). Peak memory consumption was 46.3 MB. Max. memory is 8.0 GB. [2020-10-23 21:47:08,557 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 124.8 MB in the end (delta: 80.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 21:47:08,558 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.52 ms. Allocated memory is still 151.0 MB. Free memory was 107.8 MB in the beginning and 128.0 MB in the end (delta: -20.2 MB). Peak memory consumption was 5.9 MB. Max. memory is 8.0 GB. [2020-10-23 21:47:08,559 INFO L168 Benchmark]: Boogie Preprocessor took 35.75 ms. Allocated memory is still 151.0 MB. Free memory was 128.0 MB in the beginning and 126.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 21:47:08,560 INFO L168 Benchmark]: RCFGBuilder took 478.30 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 120.7 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.1 MB. Max. memory is 8.0 GB. [2020-10-23 21:47:08,562 INFO L168 Benchmark]: TraceAbstraction took 57899.52 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 120.2 MB in the beginning and 93.2 MB in the end (delta: 26.9 MB). Peak memory consumption was 58.4 MB. Max. memory is 8.0 GB. [2020-10-23 21:47:08,566 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 124.8 MB in the end (delta: 80.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 278.52 ms. Allocated memory is still 151.0 MB. Free memory was 107.8 MB in the beginning and 128.0 MB in the end (delta: -20.2 MB). Peak memory consumption was 5.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.75 ms. Allocated memory is still 151.0 MB. Free memory was 128.0 MB in the beginning and 126.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 478.30 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 120.7 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 57899.52 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 120.2 MB in the beginning and 93.2 MB in the end (delta: 26.9 MB). Peak memory consumption was 58.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...