/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-acceleration/underapprox_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 22:51:06,714 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 22:51:06,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 22:51:06,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 22:51:06,739 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 22:51:06,741 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 22:51:06,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 22:51:06,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 22:51:06,752 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 22:51:06,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 22:51:06,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 22:51:06,759 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 22:51:06,759 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 22:51:06,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 22:51:06,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 22:51:06,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 22:51:06,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 22:51:06,765 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 22:51:06,767 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 22:51:06,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 22:51:06,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 22:51:06,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 22:51:06,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 22:51:06,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 22:51:06,777 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 22:51:06,778 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 22:51:06,778 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 22:51:06,779 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 22:51:06,779 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 22:51:06,780 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 22:51:06,781 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 22:51:06,781 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 22:51:06,782 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 22:51:06,783 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 22:51:06,785 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 22:51:06,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 22:51:06,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 22:51:06,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 22:51:06,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 22:51:06,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 22:51:06,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 22:51:06,789 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-17 22:51:06,817 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 22:51:06,817 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 22:51:06,818 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 22:51:06,819 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 22:51:06,819 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 22:51:06,820 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 22:51:06,821 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 22:51:06,821 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 22:51:06,821 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 22:51:06,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 22:51:06,822 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 22:51:06,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 22:51:06,823 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 22:51:06,824 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 22:51:06,824 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 22:51:06,824 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 22:51:06,824 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 22:51:06,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 22:51:06,825 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 22:51:06,825 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 22:51:06,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 22:51:06,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 22:51:06,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 22:51:06,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 22:51:06,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 22:51:06,827 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 22:51:06,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 22:51:06,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 22:51:06,827 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 22:51:06,827 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 22:51:07,205 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 22:51:07,230 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 22:51:07,234 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 22:51:07,236 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 22:51:07,236 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 22:51:07,237 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/underapprox_2-2.c [2020-07-17 22:51:07,316 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/212d39d66/02a3a0d611d147cf91b8917bcac3ee01/FLAG300f13eea [2020-07-17 22:51:07,829 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 22:51:07,830 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/underapprox_2-2.c [2020-07-17 22:51:07,838 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/212d39d66/02a3a0d611d147cf91b8917bcac3ee01/FLAG300f13eea [2020-07-17 22:51:08,194 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/212d39d66/02a3a0d611d147cf91b8917bcac3ee01 [2020-07-17 22:51:08,206 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 22:51:08,209 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 22:51:08,210 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 22:51:08,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 22:51:08,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 22:51:08,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:51:08" (1/1) ... [2020-07-17 22:51:08,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@226e00a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:51:08, skipping insertion in model container [2020-07-17 22:51:08,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:51:08" (1/1) ... [2020-07-17 22:51:08,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 22:51:08,252 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 22:51:08,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:51:08,472 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 22:51:08,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:51:08,508 INFO L208 MainTranslator]: Completed translation [2020-07-17 22:51:08,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:51:08 WrapperNode [2020-07-17 22:51:08,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 22:51:08,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 22:51:08,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 22:51:08,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 22:51:08,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:51:08" (1/1) ... [2020-07-17 22:51:08,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:51:08" (1/1) ... [2020-07-17 22:51:08,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:51:08" (1/1) ... [2020-07-17 22:51:08,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:51:08" (1/1) ... [2020-07-17 22:51:08,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:51:08" (1/1) ... [2020-07-17 22:51:08,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:51:08" (1/1) ... [2020-07-17 22:51:08,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:51:08" (1/1) ... [2020-07-17 22:51:08,545 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 22:51:08,546 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 22:51:08,546 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 22:51:08,546 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 22:51:08,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:51:08" (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 [2020-07-17 22:51:08,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 22:51:08,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 22:51:08,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 22:51:08,707 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 22:51:08,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 22:51:08,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 22:51:08,707 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 22:51:08,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 22:51:08,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 22:51:08,959 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 22:51:08,959 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-17 22:51:08,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:51:08 BoogieIcfgContainer [2020-07-17 22:51:08,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 22:51:08,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 22:51:08,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 22:51:08,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 22:51:08,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 10:51:08" (1/3) ... [2020-07-17 22:51:08,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78777e1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:51:08, skipping insertion in model container [2020-07-17 22:51:08,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:51:08" (2/3) ... [2020-07-17 22:51:08,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78777e1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:51:08, skipping insertion in model container [2020-07-17 22:51:08,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:51:08" (3/3) ... [2020-07-17 22:51:08,980 INFO L109 eAbstractionObserver]: Analyzing ICFG underapprox_2-2.c [2020-07-17 22:51:09,001 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 22:51:09,024 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 22:51:09,063 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 22:51:09,092 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 22:51:09,092 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 22:51:09,093 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 22:51:09,093 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 22:51:09,094 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 22:51:09,094 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 22:51:09,094 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 22:51:09,094 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 22:51:09,122 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-07-17 22:51:09,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-17 22:51:09,129 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:51:09,130 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:51:09,131 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:51:09,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:51:09,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1846144830, now seen corresponding path program 1 times [2020-07-17 22:51:09,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:51:09,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887856858] [2020-07-17 22:51:09,150 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:51:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:51:09,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 22:51:09,275 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.proof.FixResolutionProof.fix(FixResolutionProof.java:191) at de.uni_freiburg.informatik.ultimate.smtinterpol.proof.ProofTermGenerator.convert(ProofTermGenerator.java:150) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getProof(SMTInterpol.java:797) 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.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) 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$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-17 22:51:09,283 INFO L168 Benchmark]: Toolchain (without parser) took 1073.17 ms. Allocated memory was 142.6 MB in the beginning and 201.3 MB in the end (delta: 58.7 MB). Free memory was 100.3 MB in the beginning and 155.2 MB in the end (delta: -55.0 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. [2020-07-17 22:51:09,284 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 142.6 MB. Free memory was 118.6 MB in the beginning and 118.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-17 22:51:09,286 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.44 ms. Allocated memory is still 142.6 MB. Free memory was 100.1 MB in the beginning and 90.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-17 22:51:09,287 INFO L168 Benchmark]: Boogie Preprocessor took 35.31 ms. Allocated memory is still 142.6 MB. Free memory was 90.6 MB in the beginning and 89.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. [2020-07-17 22:51:09,289 INFO L168 Benchmark]: RCFGBuilder took 420.80 ms. Allocated memory was 142.6 MB in the beginning and 201.3 MB in the end (delta: 58.7 MB). Free memory was 89.0 MB in the beginning and 167.2 MB in the end (delta: -78.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-17 22:51:09,290 INFO L168 Benchmark]: TraceAbstraction took 310.07 ms. Allocated memory is still 201.3 MB. Free memory was 166.6 MB in the beginning and 155.2 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2020-07-17 22:51:09,295 INFO L336 ainManager$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 0.25 ms. Allocated memory is still 142.6 MB. Free memory was 118.6 MB in the beginning and 118.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 299.44 ms. Allocated memory is still 142.6 MB. Free memory was 100.1 MB in the beginning and 90.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.31 ms. Allocated memory is still 142.6 MB. Free memory was 90.6 MB in the beginning and 89.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 420.80 ms. Allocated memory was 142.6 MB in the beginning and 201.3 MB in the end (delta: 58.7 MB). Free memory was 89.0 MB in the beginning and 167.2 MB in the end (delta: -78.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 310.07 ms. Allocated memory is still 201.3 MB. Free memory was 166.6 MB in the beginning and 155.2 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 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.proof.FixResolutionProof.fix(FixResolutionProof.java:191) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...