/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/test26-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-8fc6572 [2020-07-11 01:07:01,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-11 01:07:01,249 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-11 01:07:01,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-11 01:07:01,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-11 01:07:01,271 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-11 01:07:01,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-11 01:07:01,284 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-11 01:07:01,288 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-11 01:07:01,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-11 01:07:01,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-11 01:07:01,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-11 01:07:01,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-11 01:07:01,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-11 01:07:01,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-11 01:07:01,302 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-11 01:07:01,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-11 01:07:01,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-11 01:07:01,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-11 01:07:01,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-11 01:07:01,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-11 01:07:01,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-11 01:07:01,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-11 01:07:01,324 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-11 01:07:01,327 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-11 01:07:01,327 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-11 01:07:01,327 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-11 01:07:01,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-11 01:07:01,331 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-11 01:07:01,332 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-11 01:07:01,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-11 01:07:01,333 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-11 01:07:01,335 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-11 01:07:01,336 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-11 01:07:01,337 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-11 01:07:01,337 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-11 01:07:01,338 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-11 01:07:01,338 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-11 01:07:01,338 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-11 01:07:01,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-11 01:07:01,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-11 01:07:01,342 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-11 01:07:01,370 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-11 01:07:01,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-11 01:07:01,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-11 01:07:01,374 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-11 01:07:01,374 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-11 01:07:01,374 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-11 01:07:01,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-11 01:07:01,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-11 01:07:01,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-11 01:07:01,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-11 01:07:01,375 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-11 01:07:01,377 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-11 01:07:01,378 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-11 01:07:01,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-11 01:07:01,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-11 01:07:01,378 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-11 01:07:01,379 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-11 01:07:01,379 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-11 01:07:01,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-11 01:07:01,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-11 01:07:01,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-11 01:07:01,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-11 01:07:01,379 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-07-11 01:07:01,670 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-11 01:07:01,684 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-11 01:07:01,688 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-11 01:07:01,690 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-11 01:07:01,690 INFO L275 PluginConnector]: CDTParser initialized [2020-07-11 01:07:01,691 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test26-1.c [2020-07-11 01:07:01,764 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ed84a046/d1bc62c8787d4ce79537a3c89ac3a274/FLAGf723a23e9 [2020-07-11 01:07:02,215 INFO L306 CDTParser]: Found 1 translation units. [2020-07-11 01:07:02,216 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test26-1.c [2020-07-11 01:07:02,223 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ed84a046/d1bc62c8787d4ce79537a3c89ac3a274/FLAGf723a23e9 [2020-07-11 01:07:02,631 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ed84a046/d1bc62c8787d4ce79537a3c89ac3a274 [2020-07-11 01:07:02,643 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-11 01:07:02,646 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-11 01:07:02,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-11 01:07:02,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-11 01:07:02,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-11 01:07:02,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 01:07:02" (1/1) ... [2020-07-11 01:07:02,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f04785f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:07:02, skipping insertion in model container [2020-07-11 01:07:02,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 01:07:02" (1/1) ... [2020-07-11 01:07:02,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-11 01:07:02,682 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-11 01:07:02,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-11 01:07:02,899 INFO L203 MainTranslator]: Completed pre-run [2020-07-11 01:07:02,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-11 01:07:02,936 INFO L208 MainTranslator]: Completed translation [2020-07-11 01:07:02,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:07:02 WrapperNode [2020-07-11 01:07:02,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-11 01:07:02,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-11 01:07:02,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-11 01:07:02,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-11 01:07:03,086 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:07:02" (1/1) ... [2020-07-11 01:07:03,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:07:02" (1/1) ... [2020-07-11 01:07:03,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:07:02" (1/1) ... [2020-07-11 01:07:03,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:07:02" (1/1) ... [2020-07-11 01:07:03,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:07:02" (1/1) ... [2020-07-11 01:07:03,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:07:02" (1/1) ... [2020-07-11 01:07:03,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:07:02" (1/1) ... [2020-07-11 01:07:03,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-11 01:07:03,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-11 01:07:03,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-11 01:07:03,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-11 01:07:03,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:07:02" (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 [2020-07-11 01:07:03,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-11 01:07:03,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-11 01:07:03,205 INFO L138 BoogieDeclarations]: Found implementation of procedure assign [2020-07-11 01:07:03,205 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-11 01:07:03,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-11 01:07:03,205 INFO L130 BoogieDeclarations]: Found specification of procedure assign [2020-07-11 01:07:03,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-11 01:07:03,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-11 01:07:03,205 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-11 01:07:03,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-11 01:07:03,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-11 01:07:03,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-11 01:07:03,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-11 01:07:03,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-11 01:07:03,503 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-11 01:07:03,503 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-11 01:07:03,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 01:07:03 BoogieIcfgContainer [2020-07-11 01:07:03,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-11 01:07:03,518 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-11 01:07:03,519 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-11 01:07:03,522 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-11 01:07:03,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.07 01:07:02" (1/3) ... [2020-07-11 01:07:03,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a9e783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 01:07:03, skipping insertion in model container [2020-07-11 01:07:03,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:07:02" (2/3) ... [2020-07-11 01:07:03,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a9e783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 01:07:03, skipping insertion in model container [2020-07-11 01:07:03,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 01:07:03" (3/3) ... [2020-07-11 01:07:03,528 INFO L109 eAbstractionObserver]: Analyzing ICFG test26-1.c [2020-07-11 01:07:03,540 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-11 01:07:03,547 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-11 01:07:03,570 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-11 01:07:03,589 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-11 01:07:03,590 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-11 01:07:03,590 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-11 01:07:03,590 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-11 01:07:03,591 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-11 01:07:03,591 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-11 01:07:03,591 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-11 01:07:03,591 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-11 01:07:03,606 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-07-11 01:07:03,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-11 01:07:03,615 INFO L414 BasicCegarLoop]: Found error trace [2020-07-11 01:07:03,616 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] [2020-07-11 01:07:03,617 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-11 01:07:03,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-11 01:07:03,622 INFO L82 PathProgramCache]: Analyzing trace with hash 584275181, now seen corresponding path program 1 times [2020-07-11 01:07:03,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-11 01:07:03,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350512000] [2020-07-11 01:07:03,630 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-11 01:07:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-11 01:07:03,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-11 01:07:03,813 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:391) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:385) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:332) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:332) 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.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:106) 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$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-11 01:07:03,820 INFO L168 Benchmark]: Toolchain (without parser) took 1174.69 ms. Allocated memory was 142.1 MB in the beginning and 207.6 MB in the end (delta: 65.5 MB). Free memory was 105.0 MB in the beginning and 153.1 MB in the end (delta: -48.1 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. [2020-07-11 01:07:03,822 INFO L168 Benchmark]: CDTParser took 0.99 ms. Allocated memory is still 142.1 MB. Free memory was 122.8 MB in the beginning and 122.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-11 01:07:03,823 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.86 ms. Allocated memory is still 142.1 MB. Free memory was 104.8 MB in the beginning and 94.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-07-11 01:07:03,825 INFO L168 Benchmark]: Boogie Preprocessor took 191.64 ms. Allocated memory was 142.1 MB in the beginning and 207.6 MB in the end (delta: 65.5 MB). Free memory was 94.6 MB in the beginning and 184.5 MB in the end (delta: -89.9 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2020-07-11 01:07:03,826 INFO L168 Benchmark]: RCFGBuilder took 387.30 ms. Allocated memory is still 207.6 MB. Free memory was 184.5 MB in the beginning and 166.0 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. [2020-07-11 01:07:03,827 INFO L168 Benchmark]: TraceAbstraction took 298.42 ms. Allocated memory is still 207.6 MB. Free memory was 166.0 MB in the beginning and 153.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-07-11 01:07:03,831 INFO L336 ainManager$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 0.99 ms. Allocated memory is still 142.1 MB. Free memory was 122.8 MB in the beginning and 122.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 290.86 ms. Allocated memory is still 142.1 MB. Free memory was 104.8 MB in the beginning and 94.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 191.64 ms. Allocated memory was 142.1 MB in the beginning and 207.6 MB in the end (delta: 65.5 MB). Free memory was 94.6 MB in the beginning and 184.5 MB in the end (delta: -89.9 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 387.30 ms. Allocated memory is still 207.6 MB. Free memory was 184.5 MB in the beginning and 166.0 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 298.42 ms. Allocated memory is still 207.6 MB. Free memory was 166.0 MB in the beginning and 153.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 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...