/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 0.1.25-8fc6572 [2020-07-10 19:02:34,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-10 19:02:34,891 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-10 19:02:34,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-10 19:02:34,909 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-10 19:02:34,910 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-10 19:02:34,912 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-10 19:02:34,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-10 19:02:34,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-10 19:02:34,916 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-10 19:02:34,917 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-10 19:02:34,919 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-10 19:02:34,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-10 19:02:34,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-10 19:02:34,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-10 19:02:34,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-10 19:02:34,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-10 19:02:34,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-10 19:02:34,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-10 19:02:34,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-10 19:02:34,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-10 19:02:34,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-10 19:02:34,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-10 19:02:34,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-10 19:02:34,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-10 19:02:34,936 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-10 19:02:34,936 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-10 19:02:34,937 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-10 19:02:34,938 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-10 19:02:34,939 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-10 19:02:34,939 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-10 19:02:34,940 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-10 19:02:34,941 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-10 19:02:34,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-10 19:02:34,943 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-10 19:02:34,943 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-10 19:02:34,944 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-10 19:02:34,944 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-10 19:02:34,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-10 19:02:34,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-10 19:02:34,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-10 19:02:34,947 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-10 19:02:34,958 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-10 19:02:34,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-10 19:02:34,959 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-10 19:02:34,960 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-10 19:02:34,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-10 19:02:34,960 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-10 19:02:34,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-10 19:02:34,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-10 19:02:34,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-10 19:02:34,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-10 19:02:34,961 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-10 19:02:34,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-10 19:02:34,962 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-10 19:02:34,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-10 19:02:34,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-10 19:02:34,962 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-10 19:02:34,962 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-10 19:02:34,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-10 19:02:34,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-10 19:02:34,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-10 19:02:34,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-10 19:02:34,963 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-10 19:02:34,964 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-10 19:02:35,235 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-10 19:02:35,254 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-10 19:02:35,257 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-10 19:02:35,258 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-10 19:02:35,259 INFO L275 PluginConnector]: CDTParser initialized [2020-07-10 19:02:35,259 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test26-1.c [2020-07-10 19:02:35,333 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27654d8d8/337b5b01287f4b69b17d573008c035d3/FLAG5a454ee11 [2020-07-10 19:02:35,813 INFO L306 CDTParser]: Found 1 translation units. [2020-07-10 19:02:35,814 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test26-1.c [2020-07-10 19:02:35,820 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27654d8d8/337b5b01287f4b69b17d573008c035d3/FLAG5a454ee11 [2020-07-10 19:02:36,148 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27654d8d8/337b5b01287f4b69b17d573008c035d3 [2020-07-10 19:02:36,157 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-10 19:02:36,159 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-10 19:02:36,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-10 19:02:36,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-10 19:02:36,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-10 19:02:36,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 07:02:36" (1/1) ... [2020-07-10 19:02:36,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72131529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 07:02:36, skipping insertion in model container [2020-07-10 19:02:36,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 07:02:36" (1/1) ... [2020-07-10 19:02:36,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-10 19:02:36,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-10 19:02:36,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 19:02:36,418 INFO L203 MainTranslator]: Completed pre-run [2020-07-10 19:02:36,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 19:02:36,454 INFO L208 MainTranslator]: Completed translation [2020-07-10 19:02:36,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 07:02:36 WrapperNode [2020-07-10 19:02:36,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-10 19:02:36,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-10 19:02:36,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-10 19:02:36,456 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-10 19:02:36,547 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 07:02:36" (1/1) ... [2020-07-10 19:02:36,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 07:02:36" (1/1) ... [2020-07-10 19:02:36,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 07:02:36" (1/1) ... [2020-07-10 19:02:36,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 07:02:36" (1/1) ... [2020-07-10 19:02:36,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 07:02:36" (1/1) ... [2020-07-10 19:02:36,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 07:02:36" (1/1) ... [2020-07-10 19:02:36,568 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 07:02:36" (1/1) ... [2020-07-10 19:02:36,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-10 19:02:36,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-10 19:02:36,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-10 19:02:36,571 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-10 19:02:36,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 07:02:36" (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 [2020-07-10 19:02:36,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-10 19:02:36,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-10 19:02:36,632 INFO L138 BoogieDeclarations]: Found implementation of procedure assign [2020-07-10 19:02:36,632 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-10 19:02:36,632 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-10 19:02:36,632 INFO L130 BoogieDeclarations]: Found specification of procedure assign [2020-07-10 19:02:36,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-10 19:02:36,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-10 19:02:36,633 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-10 19:02:36,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-10 19:02:36,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-10 19:02:36,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-10 19:02:36,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-10 19:02:36,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-10 19:02:36,974 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-10 19:02:36,975 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-10 19:02:36,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 07:02:36 BoogieIcfgContainer [2020-07-10 19:02:36,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-10 19:02:36,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-10 19:02:36,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-10 19:02:36,992 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-10 19:02:36,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.07 07:02:36" (1/3) ... [2020-07-10 19:02:36,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3da5bbaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 07:02:36, skipping insertion in model container [2020-07-10 19:02:36,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 07:02:36" (2/3) ... [2020-07-10 19:02:36,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3da5bbaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 07:02:36, skipping insertion in model container [2020-07-10 19:02:36,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 07:02:36" (3/3) ... [2020-07-10 19:02:36,997 INFO L109 eAbstractionObserver]: Analyzing ICFG test26-1.c [2020-07-10 19:02:37,008 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-10 19:02:37,017 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-10 19:02:37,032 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-10 19:02:37,057 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-10 19:02:37,057 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-10 19:02:37,058 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-10 19:02:37,058 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-10 19:02:37,058 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-10 19:02:37,059 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-10 19:02:37,059 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-10 19:02:37,059 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-10 19:02:37,079 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-07-10 19:02:37,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-10 19:02:37,089 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 19:02:37,089 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] [2020-07-10 19:02:37,090 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 19:02:37,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 19:02:37,095 INFO L82 PathProgramCache]: Analyzing trace with hash 584275181, now seen corresponding path program 1 times [2020-07-10 19:02:37,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-10 19:02:37,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594504899] [2020-07-10 19:02:37,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 19:02:37,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 19:02:37,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-10 19:02:37,283 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.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:266) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:184) 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$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-10 19:02:37,290 INFO L168 Benchmark]: Toolchain (without parser) took 1129.94 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 102.9 MB in the beginning and 147.7 MB in the end (delta: -44.8 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. [2020-07-10 19:02:37,291 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 138.4 MB. Free memory is still 120.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-10 19:02:37,292 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.68 ms. Allocated memory is still 138.4 MB. Free memory was 102.9 MB in the beginning and 92.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-07-10 19:02:37,293 INFO L168 Benchmark]: Boogie Preprocessor took 115.17 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 92.1 MB in the beginning and 180.4 MB in the end (delta: -88.2 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2020-07-10 19:02:37,294 INFO L168 Benchmark]: RCFGBuilder took 415.86 ms. Allocated memory is still 202.4 MB. Free memory was 180.4 MB in the beginning and 161.1 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. [2020-07-10 19:02:37,295 INFO L168 Benchmark]: TraceAbstraction took 297.73 ms. Allocated memory is still 202.4 MB. Free memory was 161.1 MB in the beginning and 147.7 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-07-10 19:02:37,299 INFO L336 ainManager$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 0.27 ms. Allocated memory is still 138.4 MB. Free memory is still 120.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 294.68 ms. Allocated memory is still 138.4 MB. Free memory was 102.9 MB in the beginning and 92.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.17 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 92.1 MB in the beginning and 180.4 MB in the end (delta: -88.2 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 415.86 ms. Allocated memory is still 202.4 MB. Free memory was 180.4 MB in the beginning and 161.1 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 297.73 ms. Allocated memory is still 202.4 MB. Free memory was 161.1 MB in the beginning and 147.7 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 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...