/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 0.2.0-7d8eed3 [2020-11-07 01:57:36,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 01:57:36,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 01:57:36,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 01:57:36,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 01:57:36,282 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 01:57:36,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 01:57:36,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 01:57:36,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 01:57:36,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 01:57:36,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 01:57:36,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 01:57:36,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 01:57:36,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 01:57:36,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 01:57:36,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 01:57:36,322 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 01:57:36,333 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 01:57:36,334 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 01:57:36,335 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 01:57:36,340 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 01:57:36,359 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 01:57:36,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 01:57:36,361 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 01:57:36,362 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 01:57:36,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 01:57:36,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 01:57:36,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 01:57:36,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 01:57:36,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 01:57:36,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 01:57:36,363 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 01:57:36,363 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 01:57:36,364 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 01:57:36,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 01:57:36,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 01:57:36,364 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 01:57:36,365 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 01:57:36,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 01:57:36,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 01:57:36,365 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 01:57:36,365 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 01:57:36,366 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 01:57:36,366 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 01:57:36,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 01:57:36,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 01:57:36,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 01:57:36,783 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 01:57:36,784 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 01:57:36,785 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01_bug02.i [2020-11-07 01:57:36,880 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/567f65c29/c8fcad44478642e5ac2e051c94644abb/FLAG7f7cacd7d [2020-11-07 01:57:37,576 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 01:57:37,577 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01_bug02.i [2020-11-07 01:57:37,584 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/567f65c29/c8fcad44478642e5ac2e051c94644abb/FLAG7f7cacd7d [2020-11-07 01:57:37,962 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/567f65c29/c8fcad44478642e5ac2e051c94644abb [2020-11-07 01:57:37,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 01:57:37,974 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 01:57:37,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 01:57:37,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 01:57:37,984 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 01:57:37,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:57:37" (1/1) ... [2020-11-07 01:57:37,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37da46ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:37, skipping insertion in model container [2020-11-07 01:57:37,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:57:37" (1/1) ... [2020-11-07 01:57:37,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 01:57:38,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 01:57:38,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:57:38,230 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 01:57:38,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:57:38,261 INFO L208 MainTranslator]: Completed translation [2020-11-07 01:57:38,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:38 WrapperNode [2020-11-07 01:57:38,262 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 01:57:38,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 01:57:38,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 01:57:38,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 01:57:38,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:38" (1/1) ... [2020-11-07 01:57:38,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:38" (1/1) ... [2020-11-07 01:57:38,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:38" (1/1) ... [2020-11-07 01:57:38,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:38" (1/1) ... [2020-11-07 01:57:38,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:38" (1/1) ... [2020-11-07 01:57:38,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:38" (1/1) ... [2020-11-07 01:57:38,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:38" (1/1) ... [2020-11-07 01:57:38,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 01:57:38,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 01:57:38,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 01:57:38,305 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 01:57:38,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:38" (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 [2020-11-07 01:57:38,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 01:57:38,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 01:57:38,373 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 01:57:38,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 01:57:38,373 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 01:57:38,373 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 01:57:38,373 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 01:57:38,373 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-07 01:57:38,373 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-07 01:57:38,374 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 01:57:38,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 01:57:38,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 01:57:38,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-11-07 01:57:38,374 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 01:57:38,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 01:57:38,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 01:57:38,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 01:57:38,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 01:57:38,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 01:57:38,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 01:57:38,648 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 01:57:38,649 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 01:57:38,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:57:38 BoogieIcfgContainer [2020-11-07 01:57:38,651 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 01:57:38,653 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 01:57:38,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 01:57:38,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 01:57:38,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:57:37" (1/3) ... [2020-11-07 01:57:38,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b769be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:57:38, skipping insertion in model container [2020-11-07 01:57:38,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:38" (2/3) ... [2020-11-07 01:57:38,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b769be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:57:38, skipping insertion in model container [2020-11-07 01:57:38,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:57:38" (3/3) ... [2020-11-07 01:57:38,661 INFO L111 eAbstractionObserver]: Analyzing ICFG sum01_bug02.i [2020-11-07 01:57:38,684 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 01:57:38,688 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 01:57:38,707 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 01:57:38,739 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 01:57:38,740 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 01:57:38,740 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 01:57:38,740 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 01:57:38,741 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 01:57:38,741 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 01:57:38,741 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 01:57:38,741 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 01:57:38,762 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-11-07 01:57:38,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-07 01:57:38,778 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:57:38,782 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] [2020-11-07 01:57:38,783 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:57:38,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:57:38,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1030168209, now seen corresponding path program 1 times [2020-11-07 01:57:38,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:57:38,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202360258] [2020-11-07 01:57:38,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:57:38,971 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:57:39,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:57:39,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:57:39,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:57:39,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 01:57:39,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202360258] [2020-11-07 01:57:39,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:57:39,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 01:57:39,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772915217] [2020-11-07 01:57:39,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 01:57:39,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:57:39,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 01:57:39,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 01:57:39,374 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 6 states. [2020-11-07 01:57:39,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:57:39,737 INFO L93 Difference]: Finished difference Result 72 states and 84 transitions. [2020-11-07 01:57:39,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 01:57:39,739 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-11-07 01:57:39,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:57:39,748 INFO L225 Difference]: With dead ends: 72 [2020-11-07 01:57:39,748 INFO L226 Difference]: Without dead ends: 42 [2020-11-07 01:57:39,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-07 01:57:39,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-07 01:57:39,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-11-07 01:57:39,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-07 01:57:39,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2020-11-07 01:57:39,812 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 24 [2020-11-07 01:57:39,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:57:39,812 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2020-11-07 01:57:39,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 01:57:39,813 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-11-07 01:57:39,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-07 01:57:39,814 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:57:39,815 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] [2020-11-07 01:57:39,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 01:57:39,815 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:57:39,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:57:39,817 INFO L82 PathProgramCache]: Analyzing trace with hash 540023015, now seen corresponding path program 1 times [2020-11-07 01:57:39,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:57:39,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153902039] [2020-11-07 01:57:39,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:57:42,088 INFO L316 leratedInterpolation]: Starting analysis with loop acceleration approximation PRECISE [2020-11-07 01:57:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:57:42,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:57:42,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:57:42,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 01:57:43,034 WARN L194 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 115 [2020-11-07 01:57:43,469 WARN L194 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 115 [2020-11-07 01:57:43,738 WARN L194 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 109 [2020-11-07 01:58:29,140 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-11-07 01:58:29,142 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") [2020-11-07 01:58:29,142 WARN L340 FreeRefinementEngine]: Global settings require throwing the following exception [2020-11-07 01:58:29,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 01:58:29,144 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:346) 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:343) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:149) 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$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:206) ... 39 more [2020-11-07 01:58:29,154 INFO L168 Benchmark]: Toolchain (without parser) took 51182.46 ms. Allocated memory was 151.0 MB in the beginning and 183.5 MB in the end (delta: 32.5 MB). Free memory was 127.7 MB in the beginning and 87.4 MB in the end (delta: 40.3 MB). Peak memory consumption was 73.4 MB. Max. memory is 8.0 GB. [2020-11-07 01:58:29,155 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 01:58:29,158 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.29 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 117.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-11-07 01:58:29,160 INFO L168 Benchmark]: Boogie Preprocessor took 40.35 ms. Allocated memory is still 151.0 MB. Free memory was 117.8 MB in the beginning and 116.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 01:58:29,160 INFO L168 Benchmark]: RCFGBuilder took 347.20 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 134.5 MB in the end (delta: -18.1 MB). Peak memory consumption was 18.3 MB. Max. memory is 8.0 GB. [2020-11-07 01:58:29,165 INFO L168 Benchmark]: TraceAbstraction took 50495.97 ms. Allocated memory was 151.0 MB in the beginning and 183.5 MB in the end (delta: 32.5 MB). Free memory was 134.1 MB in the beginning and 87.4 MB in the end (delta: 46.7 MB). Peak memory consumption was 79.3 MB. Max. memory is 8.0 GB. [2020-11-07 01:58:29,174 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 282.29 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 117.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.35 ms. Allocated memory is still 151.0 MB. Free memory was 117.8 MB in the beginning and 116.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 347.20 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 134.5 MB in the end (delta: -18.1 MB). Peak memory consumption was 18.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 50495.97 ms. Allocated memory was 151.0 MB in the beginning and 183.5 MB in the end (delta: 32.5 MB). Free memory was 134.1 MB in the beginning and 87.4 MB in the end (delta: 46.7 MB). Peak memory consumption was 79.3 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...