/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/cggmp2005b.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 22:01:05,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 22:01:05,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 22:01:05,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 22:01:05,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 22:01:05,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 22:01:05,650 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 22:01:05,651 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 22:01:05,677 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 22:01:05,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 22:01:05,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 22:01:05,683 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 22:01:05,683 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 22:01:05,684 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 22:01:05,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 22:01:05,684 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 22:01:05,684 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 22:01:05,684 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 22:01:05,686 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 22:01:05,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 22:01:05,686 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 22:01:05,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 22:01:05,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 22:01:05,687 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 22:01:05,687 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 22:01:05,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 22:01:05,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 22:01:05,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 22:01:05,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 22:01:05,689 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 22:01:05,689 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 22:01:06,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 22:01:06,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 22:01:06,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 22:01:06,134 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 22:01:06,135 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 22:01:06,136 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005b.i [2020-10-23 22:01:06,219 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f98d0051c/1ddb5d84b3bc4841b859fda670c8bb51/FLAG29ece3f71 [2020-10-23 22:01:06,915 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 22:01:06,916 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005b.i [2020-10-23 22:01:06,931 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f98d0051c/1ddb5d84b3bc4841b859fda670c8bb51/FLAG29ece3f71 [2020-10-23 22:01:07,300 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f98d0051c/1ddb5d84b3bc4841b859fda670c8bb51 [2020-10-23 22:01:07,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 22:01:07,313 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 22:01:07,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 22:01:07,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 22:01:07,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 22:01:07,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:01:07" (1/1) ... [2020-10-23 22:01:07,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74aa0b83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:07, skipping insertion in model container [2020-10-23 22:01:07,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:01:07" (1/1) ... [2020-10-23 22:01:07,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 22:01:07,359 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 22:01:07,579 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:01:07,590 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 22:01:07,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:01:07,621 INFO L208 MainTranslator]: Completed translation [2020-10-23 22:01:07,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:07 WrapperNode [2020-10-23 22:01:07,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 22:01:07,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 22:01:07,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 22:01:07,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 22:01:07,637 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:07" (1/1) ... [2020-10-23 22:01:07,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:07" (1/1) ... [2020-10-23 22:01:07,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:07" (1/1) ... [2020-10-23 22:01:07,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:07" (1/1) ... [2020-10-23 22:01:07,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:07" (1/1) ... [2020-10-23 22:01:07,656 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:07" (1/1) ... [2020-10-23 22:01:07,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:07" (1/1) ... [2020-10-23 22:01:07,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 22:01:07,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 22:01:07,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 22:01:07,661 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 22:01:07,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:07" (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 22:01:07,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 22:01:07,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 22:01:07,759 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 22:01:07,759 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 22:01:07,759 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 22:01:07,759 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 22:01:07,759 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 22:01:07,759 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 22:01:07,760 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-23 22:01:07,760 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-23 22:01:07,760 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 22:01:07,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 22:01:07,760 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 22:01:07,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 22:01:07,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 22:01:07,761 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 22:01:07,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 22:01:07,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 22:01:07,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 22:01:07,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 22:01:07,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 22:01:07,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 22:01:08,174 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 22:01:08,174 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-23 22:01:08,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:01:08 BoogieIcfgContainer [2020-10-23 22:01:08,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 22:01:08,178 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 22:01:08,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 22:01:08,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 22:01:08,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:01:07" (1/3) ... [2020-10-23 22:01:08,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d5bb9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:01:08, skipping insertion in model container [2020-10-23 22:01:08,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:07" (2/3) ... [2020-10-23 22:01:08,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d5bb9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:01:08, skipping insertion in model container [2020-10-23 22:01:08,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:01:08" (3/3) ... [2020-10-23 22:01:08,186 INFO L111 eAbstractionObserver]: Analyzing ICFG cggmp2005b.i [2020-10-23 22:01:08,199 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 22:01:08,205 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 22:01:08,219 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 22:01:08,247 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 22:01:08,248 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 22:01:08,248 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 22:01:08,248 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 22:01:08,248 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 22:01:08,248 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 22:01:08,248 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 22:01:08,249 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 22:01:08,267 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-10-23 22:01:08,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-23 22:01:08,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:01:08,279 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 22:01:08,279 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:01:08,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:01:08,287 INFO L82 PathProgramCache]: Analyzing trace with hash -791041760, now seen corresponding path program 1 times [2020-10-23 22:01:08,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:01:08,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480045066] [2020-10-23 22:01:08,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:01:08,412 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:01:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:08,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:01:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:08,643 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 22:01:08,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480045066] [2020-10-23 22:01:08,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:01:08,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 22:01:08,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875032365] [2020-10-23 22:01:08,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 22:01:08,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:01:08,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 22:01:08,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 22:01:08,670 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 3 states. [2020-10-23 22:01:08,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:01:08,760 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2020-10-23 22:01:08,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 22:01:08,762 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-23 22:01:08,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:01:08,770 INFO L225 Difference]: With dead ends: 63 [2020-10-23 22:01:08,771 INFO L226 Difference]: Without dead ends: 31 [2020-10-23 22:01:08,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 22:01:08,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-23 22:01:08,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-23 22:01:08,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-23 22:01:08,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-10-23 22:01:08,824 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 24 [2020-10-23 22:01:08,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:01:08,825 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-10-23 22:01:08,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 22:01:08,825 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-10-23 22:01:08,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-23 22:01:08,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:01:08,827 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 22:01:08,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 22:01:08,827 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:01:08,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:01:08,828 INFO L82 PathProgramCache]: Analyzing trace with hash 873611520, now seen corresponding path program 1 times [2020-10-23 22:01:08,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:01:08,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597732332] [2020-10-23 22:01:08,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:01:08,832 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:01:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:08,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:01:08,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:08,925 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 22:01:08,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597732332] [2020-10-23 22:01:08,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:01:08,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 22:01:08,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662741752] [2020-10-23 22:01:08,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 22:01:08,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:01:08,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 22:01:08,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 22:01:08,929 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 4 states. [2020-10-23 22:01:09,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:01:09,030 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2020-10-23 22:01:09,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 22:01:09,031 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-23 22:01:09,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:01:09,032 INFO L225 Difference]: With dead ends: 40 [2020-10-23 22:01:09,032 INFO L226 Difference]: Without dead ends: 33 [2020-10-23 22:01:09,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 22:01:09,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-23 22:01:09,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-10-23 22:01:09,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-23 22:01:09,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2020-10-23 22:01:09,050 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 24 [2020-10-23 22:01:09,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:01:09,050 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2020-10-23 22:01:09,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 22:01:09,051 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-10-23 22:01:09,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-23 22:01:09,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:01:09,052 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] [2020-10-23 22:01:09,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 22:01:09,053 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:01:09,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:01:09,054 INFO L82 PathProgramCache]: Analyzing trace with hash -2108623913, now seen corresponding path program 1 times [2020-10-23 22:01:09,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:01:09,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281536344] [2020-10-23 22:01:09,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:01:11,281 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation PRECISE [2020-10-23 22:01:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:11,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:01:11,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:11,389 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 22:01:11,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281536344] [2020-10-23 22:01:11,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:01:11,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 22:01:11,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943566897] [2020-10-23 22:01:11,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 22:01:11,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:01:11,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 22:01:11,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-23 22:01:11,463 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 6 states. [2020-10-23 22:01:11,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:01:11,706 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2020-10-23 22:01:11,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 22:01:11,706 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-10-23 22:01:11,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:01:11,708 INFO L225 Difference]: With dead ends: 49 [2020-10-23 22:01:11,708 INFO L226 Difference]: Without dead ends: 35 [2020-10-23 22:01:11,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-23 22:01:11,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-23 22:01:11,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2020-10-23 22:01:11,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-23 22:01:11,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2020-10-23 22:01:11,720 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 29 [2020-10-23 22:01:11,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:01:11,720 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2020-10-23 22:01:11,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 22:01:11,721 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2020-10-23 22:01:11,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-23 22:01:11,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:01:11,722 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] [2020-10-23 22:01:11,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 22:01:11,722 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:01:11,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:01:11,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1478675192, now seen corresponding path program 1 times [2020-10-23 22:01:11,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:01:11,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761371937] [2020-10-23 22:01:11,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:01:11,737 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:01:11,783 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:01:11,785 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:01:11,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:11,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:01:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:11,858 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 22:01:11,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761371937] [2020-10-23 22:01:11,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:01:11,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 22:01:11,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756218472] [2020-10-23 22:01:11,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 22:01:11,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:01:11,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 22:01:11,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 22:01:11,862 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 5 states. [2020-10-23 22:01:12,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:01:12,052 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2020-10-23 22:01:12,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 22:01:12,053 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-10-23 22:01:12,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:01:12,054 INFO L225 Difference]: With dead ends: 48 [2020-10-23 22:01:12,054 INFO L226 Difference]: Without dead ends: 41 [2020-10-23 22:01:12,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-23 22:01:12,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-23 22:01:12,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2020-10-23 22:01:12,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-23 22:01:12,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-10-23 22:01:12,070 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 31 [2020-10-23 22:01:12,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:01:12,071 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-10-23 22:01:12,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 22:01:12,071 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-10-23 22:01:12,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-23 22:01:12,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:01:12,073 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:01:12,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 22:01:12,074 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:01:12,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:01:12,074 INFO L82 PathProgramCache]: Analyzing trace with hash -681581345, now seen corresponding path program 2 times [2020-10-23 22:01:12,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:01:12,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [9297957] [2020-10-23 22:01:12,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:01:12,118 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:01:14,800 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-23 22:01:14,811 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation PRECISE [2020-10-23 22:01:16,922 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation PRECISE [2020-10-23 22:01:16,924 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:01:16,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 22:01:16,928 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:448) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:328) 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) [2020-10-23 22:01:16,937 INFO L168 Benchmark]: Toolchain (without parser) took 9628.32 ms. Allocated memory was 151.0 MB in the beginning and 185.6 MB in the end (delta: 34.6 MB). Free memory was 127.0 MB in the beginning and 116.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 45.3 MB. Max. memory is 8.0 GB. [2020-10-23 22:01:16,939 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 126.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 22:01:16,943 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.80 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 116.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 22:01:16,944 INFO L168 Benchmark]: Boogie Preprocessor took 36.70 ms. Allocated memory is still 151.0 MB. Free memory was 116.9 MB in the beginning and 115.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 22:01:16,945 INFO L168 Benchmark]: RCFGBuilder took 515.72 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 133.8 MB in the end (delta: -18.4 MB). Peak memory consumption was 15.9 MB. Max. memory is 8.0 GB. [2020-10-23 22:01:16,948 INFO L168 Benchmark]: TraceAbstraction took 8755.30 ms. Allocated memory was 151.0 MB in the beginning and 185.6 MB in the end (delta: 34.6 MB). Free memory was 133.3 MB in the beginning and 116.9 MB in the end (delta: 16.4 MB). Peak memory consumption was 52.5 MB. Max. memory is 8.0 GB. [2020-10-23 22:01:16,951 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 126.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 301.80 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 116.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.70 ms. Allocated memory is still 151.0 MB. Free memory was 116.9 MB in the beginning and 115.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 515.72 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 133.8 MB in the end (delta: -18.4 MB). Peak memory consumption was 15.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 8755.30 ms. Allocated memory was 151.0 MB in the beginning and 185.6 MB in the end (delta: 34.6 MB). Free memory was 133.3 MB in the beginning and 116.9 MB in the end (delta: 16.4 MB). Peak memory consumption was 52.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:448) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...