/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/test26-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-18 00:22:17,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 00:22:17,297 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 00:22:17,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-18 00:22:17,315 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-18 00:22:17,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-18 00:22:17,319 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-18 00:22:17,333 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-18 00:22:17,335 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-18 00:22:17,336 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-18 00:22:17,337 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-18 00:22:17,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-18 00:22:17,340 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 00:22:17,343 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 00:22:17,345 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 00:22:17,346 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 00:22:17,347 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 00:22:17,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 00:22:17,351 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 00:22:17,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 00:22:17,361 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 00:22:17,362 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 00:22:17,363 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 00:22:17,364 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 00:22:17,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-18 00:22:17,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 00:22:17,382 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 00:22:17,384 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 00:22:17,385 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-18 00:22:17,397 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 00:22:17,398 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 00:22:17,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 00:22:17,400 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 00:22:17,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 00:22:17,400 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 00:22:17,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 00:22:17,401 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 00:22:17,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 00:22:17,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 00:22:17,402 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 00:22:17,403 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 00:22:17,403 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 00:22:17,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 00:22:17,405 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 00:22:17,406 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 00:22:17,406 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 00:22:17,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 00:22:17,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 00:22:17,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 00:22:17,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 00:22:17,407 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 00:22:17,407 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-18 00:22:17,719 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 00:22:17,736 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 00:22:17,740 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 00:22:17,741 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 00:22:17,742 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 00:22:17,742 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test26-1.c [2020-07-18 00:22:17,821 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b11deb9d/e8ff8221517b4817a2f53f8a373c8d51/FLAG80481af4b [2020-07-18 00:22:18,323 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 00:22:18,323 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test26-1.c [2020-07-18 00:22:18,330 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b11deb9d/e8ff8221517b4817a2f53f8a373c8d51/FLAG80481af4b [2020-07-18 00:22:18,699 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b11deb9d/e8ff8221517b4817a2f53f8a373c8d51 [2020-07-18 00:22:18,708 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 00:22:18,711 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 00:22:18,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 00:22:18,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 00:22:18,716 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 00:22:18,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:22:18" (1/1) ... [2020-07-18 00:22:18,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5be3de4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:22:18, skipping insertion in model container [2020-07-18 00:22:18,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:22:18" (1/1) ... [2020-07-18 00:22:18,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 00:22:18,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 00:22:18,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:22:18,938 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 00:22:18,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:22:18,971 INFO L208 MainTranslator]: Completed translation [2020-07-18 00:22:18,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:22:18 WrapperNode [2020-07-18 00:22:18,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 00:22:18,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 00:22:18,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 00:22:18,973 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 00:22:19,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:22:18" (1/1) ... [2020-07-18 00:22:19,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:22:18" (1/1) ... [2020-07-18 00:22:19,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:22:18" (1/1) ... [2020-07-18 00:22:19,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:22:18" (1/1) ... [2020-07-18 00:22:19,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:22:18" (1/1) ... [2020-07-18 00:22:19,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:22:18" (1/1) ... [2020-07-18 00:22:19,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:22:18" (1/1) ... [2020-07-18 00:22:19,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 00:22:19,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 00:22:19,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 00:22:19,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 00:22:19,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:22:18" (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 [2020-07-18 00:22:19,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 00:22:19,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 00:22:19,178 INFO L138 BoogieDeclarations]: Found implementation of procedure assign [2020-07-18 00:22:19,178 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 00:22:19,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 00:22:19,178 INFO L130 BoogieDeclarations]: Found specification of procedure assign [2020-07-18 00:22:19,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-18 00:22:19,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-18 00:22:19,179 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 00:22:19,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 00:22:19,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-18 00:22:19,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-18 00:22:19,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 00:22:19,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-18 00:22:19,498 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 00:22:19,498 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-18 00:22:19,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:22:19 BoogieIcfgContainer [2020-07-18 00:22:19,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 00:22:19,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 00:22:19,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 00:22:19,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 00:22:19,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 12:22:18" (1/3) ... [2020-07-18 00:22:19,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df90081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:22:19, skipping insertion in model container [2020-07-18 00:22:19,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:22:18" (2/3) ... [2020-07-18 00:22:19,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df90081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:22:19, skipping insertion in model container [2020-07-18 00:22:19,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:22:19" (3/3) ... [2020-07-18 00:22:19,510 INFO L109 eAbstractionObserver]: Analyzing ICFG test26-1.c [2020-07-18 00:22:19,520 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 00:22:19,527 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 00:22:19,539 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 00:22:19,557 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 00:22:19,557 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 00:22:19,557 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-18 00:22:19,557 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 00:22:19,558 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 00:22:19,558 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 00:22:19,558 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 00:22:19,558 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 00:22:19,572 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-07-18 00:22:19,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-18 00:22:19,583 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:22:19,584 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] [2020-07-18 00:22:19,584 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:22:19,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:22:19,589 INFO L82 PathProgramCache]: Analyzing trace with hash 584275181, now seen corresponding path program 1 times [2020-07-18 00:22:19,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:22:19,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861005457] [2020-07-18 00:22:19,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:22:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:22:19,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 00:22:19,758 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.CCInterpolator.interpolateCongruence(CCInterpolator.java:300) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.CCInterpolator.computeInterpolants(CCInterpolator.java:415) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:297) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.access$1(Interpolator.java:279) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:135) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:236) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:213) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:874) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:337) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:239) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:108) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.Interpolator.generateInterpolantsCraigNested(Interpolator.java:146) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.Interpolator.generateInterpolants(Interpolator.java:102) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:283) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:191) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:144) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) 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:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) 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$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-18 00:22:19,765 INFO L168 Benchmark]: Toolchain (without parser) took 1054.16 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 101.3 MB in the beginning and 146.5 MB in the end (delta: -45.2 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2020-07-18 00:22:19,766 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 136.8 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-18 00:22:19,768 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.87 ms. Allocated memory is still 136.8 MB. Free memory was 100.8 MB in the beginning and 90.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-18 00:22:19,769 INFO L168 Benchmark]: Boogie Preprocessor took 133.28 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 90.7 MB in the beginning and 178.8 MB in the end (delta: -88.2 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2020-07-18 00:22:19,770 INFO L168 Benchmark]: RCFGBuilder took 395.48 ms. Allocated memory is still 200.8 MB. Free memory was 178.8 MB in the beginning and 160.1 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2020-07-18 00:22:19,771 INFO L168 Benchmark]: TraceAbstraction took 258.05 ms. Allocated memory is still 200.8 MB. Free memory was 159.4 MB in the beginning and 146.5 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-07-18 00:22:19,777 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 136.8 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 260.87 ms. Allocated memory is still 136.8 MB. Free memory was 100.8 MB in the beginning and 90.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.28 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 90.7 MB in the beginning and 178.8 MB in the end (delta: -88.2 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 395.48 ms. Allocated memory is still 200.8 MB. Free memory was 178.8 MB in the beginning and 160.1 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 258.05 ms. Allocated memory is still 200.8 MB. Free memory was 159.4 MB in the beginning and 146.5 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: null: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.CCInterpolator.interpolateCongruence(CCInterpolator.java:300) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...