java -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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/ldv-regression/test27-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 02:56:20,751 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 02:56:20,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 02:56:20,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-15 02:56:20,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 02:56:20,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 02:56:20,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 02:56:20,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 02:56:20,799 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 02:56:20,802 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 02:56:20,804 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 02:56:20,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 02:56:20,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 02:56:20,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 02:56:20,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 02:56:20,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 02:56:20,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 02:56:20,829 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 02:56:20,831 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 02:56:20,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 02:56:20,835 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 [2019-10-15 02:56:20,869 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 02:56:20,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 02:56:20,871 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 02:56:20,871 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 02:56:20,871 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 02:56:20,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 02:56:20,871 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 02:56:20,872 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 02:56:20,872 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 02:56:20,872 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 02:56:20,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 02:56:20,875 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 02:56:20,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 02:56:20,876 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 02:56:20,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 02:56:20,876 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 02:56:20,876 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 02:56:20,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 02:56:20,877 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 02:56:20,877 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 02:56:20,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 02:56:20,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 02:56:20,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 02:56:20,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 02:56:20,878 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 02:56:20,878 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 02:56:20,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 02:56:20,879 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 02:56:20,879 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 02:56:21,139 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 02:56:21,151 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 02:56:21,155 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 02:56:21,156 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 02:56:21,157 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 02:56:21,157 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test27-1.c [2019-10-15 02:56:21,215 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2a895ad3/47c4b850663b4196a191c3d3bb4dd945/FLAG0898e9e0d [2019-10-15 02:56:21,656 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 02:56:21,657 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test27-1.c [2019-10-15 02:56:21,665 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2a895ad3/47c4b850663b4196a191c3d3bb4dd945/FLAG0898e9e0d [2019-10-15 02:56:22,037 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2a895ad3/47c4b850663b4196a191c3d3bb4dd945 [2019-10-15 02:56:22,050 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 02:56:22,051 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 02:56:22,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 02:56:22,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 02:56:22,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 02:56:22,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:56:22" (1/1) ... [2019-10-15 02:56:22,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18e6faf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:22, skipping insertion in model container [2019-10-15 02:56:22,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:56:22" (1/1) ... [2019-10-15 02:56:22,069 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 02:56:22,091 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 02:56:22,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:56:22,316 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 02:56:22,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:56:22,432 INFO L192 MainTranslator]: Completed translation [2019-10-15 02:56:22,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:22 WrapperNode [2019-10-15 02:56:22,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 02:56:22,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 02:56:22,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 02:56:22,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 02:56:22,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:22" (1/1) ... [2019-10-15 02:56:22,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:22" (1/1) ... [2019-10-15 02:56:22,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:22" (1/1) ... [2019-10-15 02:56:22,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:22" (1/1) ... [2019-10-15 02:56:22,468 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:22" (1/1) ... [2019-10-15 02:56:22,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:22" (1/1) ... [2019-10-15 02:56:22,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:22" (1/1) ... [2019-10-15 02:56:22,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 02:56:22,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 02:56:22,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 02:56:22,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 02:56:22,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:22" (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 [2019-10-15 02:56:22,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 02:56:22,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 02:56:22,535 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2019-10-15 02:56:22,535 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 02:56:22,535 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 02:56:22,535 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 02:56:22,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-15 02:56:22,536 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-10-15 02:56:22,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 02:56:22,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 02:56:22,537 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 02:56:22,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 02:56:22,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 02:56:22,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 02:56:22,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 02:56:22,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 02:56:22,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 02:56:22,950 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 02:56:22,951 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-15 02:56:22,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:56:22 BoogieIcfgContainer [2019-10-15 02:56:22,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 02:56:22,953 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 02:56:22,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 02:56:22,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 02:56:22,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:56:22" (1/3) ... [2019-10-15 02:56:22,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c44029 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:56:22, skipping insertion in model container [2019-10-15 02:56:22,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:22" (2/3) ... [2019-10-15 02:56:22,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c44029 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:56:22, skipping insertion in model container [2019-10-15 02:56:22,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:56:22" (3/3) ... [2019-10-15 02:56:22,961 INFO L109 eAbstractionObserver]: Analyzing ICFG test27-1.c [2019-10-15 02:56:22,970 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 02:56:22,980 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 02:56:22,991 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 02:56:23,013 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 02:56:23,014 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 02:56:23,014 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 02:56:23,014 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 02:56:23,014 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 02:56:23,014 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 02:56:23,014 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 02:56:23,014 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 02:56:23,028 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-10-15 02:56:23,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-15 02:56:23,033 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:56:23,034 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:56:23,035 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:56:23,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:56:23,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1941687829, now seen corresponding path program 1 times [2019-10-15 02:56:23,049 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:56:23,050 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305709025] [2019-10-15 02:56:23,050 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:56:23,050 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:56:23,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:56:23,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:56:23,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:56:23,219 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305709025] [2019-10-15 02:56:23,220 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:56:23,220 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 02:56:23,221 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720041428] [2019-10-15 02:56:23,225 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 02:56:23,226 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:56:23,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 02:56:23,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 02:56:23,243 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2019-10-15 02:56:23,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:56:23,270 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2019-10-15 02:56:23,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 02:56:23,272 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-10-15 02:56:23,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:56:23,283 INFO L225 Difference]: With dead ends: 34 [2019-10-15 02:56:23,284 INFO L226 Difference]: Without dead ends: 17 [2019-10-15 02:56:23,288 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 02:56:23,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-10-15 02:56:23,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-10-15 02:56:23,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-15 02:56:23,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-10-15 02:56:23,335 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 15 [2019-10-15 02:56:23,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:56:23,336 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-10-15 02:56:23,336 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 02:56:23,336 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-10-15 02:56:23,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-15 02:56:23,337 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:56:23,338 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:56:23,338 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:56:23,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:56:23,339 INFO L82 PathProgramCache]: Analyzing trace with hash -399303129, now seen corresponding path program 1 times [2019-10-15 02:56:23,339 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:56:23,340 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898226112] [2019-10-15 02:56:23,340 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:56:23,340 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:56:23,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:56:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:56:23,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:56:23,421 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898226112] [2019-10-15 02:56:23,421 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:56:23,422 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 02:56:23,422 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456865458] [2019-10-15 02:56:23,424 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:56:23,424 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:56:23,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:56:23,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:56:23,425 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 3 states. [2019-10-15 02:56:23,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:56:23,444 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2019-10-15 02:56:23,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:56:23,445 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-10-15 02:56:23,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:56:23,447 INFO L225 Difference]: With dead ends: 29 [2019-10-15 02:56:23,447 INFO L226 Difference]: Without dead ends: 18 [2019-10-15 02:56:23,448 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:56:23,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-10-15 02:56:23,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-10-15 02:56:23,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-10-15 02:56:23,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-10-15 02:56:23,454 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16 [2019-10-15 02:56:23,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:56:23,454 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-10-15 02:56:23,454 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:56:23,455 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-10-15 02:56:23,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-15 02:56:23,455 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:56:23,456 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:56:23,456 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:56:23,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:56:23,457 INFO L82 PathProgramCache]: Analyzing trace with hash -194170152, now seen corresponding path program 1 times [2019-10-15 02:56:23,457 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:56:23,457 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795631097] [2019-10-15 02:56:23,458 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:56:23,458 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:56:23,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:56:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:56:23,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:56:23,584 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795631097] [2019-10-15 02:56:23,584 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628928784] [2019-10-15 02:56:23,584 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:56:23,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:56:23,685 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 02:56:23,693 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:56:23,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:56:23,730 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:56:23,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:56:23,780 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [123256894] [2019-10-15 02:56:23,818 INFO L162 IcfgInterpreter]: Started Sifa with 17 locations of interest [2019-10-15 02:56:23,818 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 02:56:23,827 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 02:56:23,834 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 02:56:23,835 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 02:56:23,975 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-15 02:56:25,154 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2019-10-15 02:56:25,322 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2019-10-15 02:56:25,372 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2019-10-15 02:56:25,515 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2019-10-15 02:56:25,738 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2019-10-15 02:56:25,900 INFO L199 IcfgInterpreter]: Interpreting procedure check with input of size 35 for LOIs [2019-10-15 02:56:25,905 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-15 02:56:25,914 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 02:56:26,446 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-15 02:56:26,446 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 14] total 20 [2019-10-15 02:56:26,446 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693916537] [2019-10-15 02:56:26,448 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-10-15 02:56:26,448 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:56:26,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-10-15 02:56:26,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2019-10-15 02:56:26,449 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 20 states. [2019-10-15 02:56:27,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:56:27,335 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2019-10-15 02:56:27,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-15 02:56:27,341 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 17 [2019-10-15 02:56:27,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:56:27,342 INFO L225 Difference]: With dead ends: 41 [2019-10-15 02:56:27,342 INFO L226 Difference]: Without dead ends: 30 [2019-10-15 02:56:27,344 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=168, Invalid=954, Unknown=0, NotChecked=0, Total=1122 [2019-10-15 02:56:27,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-10-15 02:56:27,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 21. [2019-10-15 02:56:27,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-15 02:56:27,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2019-10-15 02:56:27,350 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 17 [2019-10-15 02:56:27,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:56:27,350 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2019-10-15 02:56:27,350 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-10-15 02:56:27,350 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2019-10-15 02:56:27,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-15 02:56:27,351 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:56:27,351 INFO L380 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:56:27,558 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:56:27,559 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:56:27,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:56:27,559 INFO L82 PathProgramCache]: Analyzing trace with hash 812335719, now seen corresponding path program 2 times [2019-10-15 02:56:27,559 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:56:27,559 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269920989] [2019-10-15 02:56:27,560 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:56:27,560 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:56:27,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:56:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:56:27,705 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:56:27,706 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269920989] [2019-10-15 02:56:27,706 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920409491] [2019-10-15 02:56:27,706 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:56:27,772 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-15 02:56:27,772 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 02:56:27,774 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-15 02:56:27,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:56:27,935 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2019-10-15 02:56:28,091 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2019-10-15 02:56:28,396 WARN L191 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2019-10-15 02:56:28,860 WARN L191 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 32 [2019-10-15 02:56:29,156 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:56:29,157 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.UnsupportedOperationException: expected NNF at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.UnsupportedOperationException: expected NNF at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:236) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive$TermWalker.walk(NonRecursive.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:195) 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.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder.(ArrayOccurrenceAnalysis.java:181) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.(ArrayOccurrenceAnalysis.java:74) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:275) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.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.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) ... 21 more [2019-10-15 02:56:29,163 INFO L168 Benchmark]: Toolchain (without parser) took 7111.88 ms. Allocated memory was 138.9 MB in the beginning and 275.8 MB in the end (delta: 136.8 MB). Free memory was 102.2 MB in the beginning and 153.8 MB in the end (delta: -51.5 MB). Peak memory consumption was 85.3 MB. Max. memory is 7.1 GB. [2019-10-15 02:56:29,164 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory is still 120.6 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-15 02:56:29,165 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.00 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 102.2 MB in the beginning and 181.0 MB in the end (delta: -78.8 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2019-10-15 02:56:29,165 INFO L168 Benchmark]: Boogie Preprocessor took 44.11 ms. Allocated memory is still 203.4 MB. Free memory was 181.0 MB in the beginning and 179.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-10-15 02:56:29,166 INFO L168 Benchmark]: RCFGBuilder took 474.57 ms. Allocated memory is still 203.4 MB. Free memory was 179.1 MB in the beginning and 156.9 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2019-10-15 02:56:29,167 INFO L168 Benchmark]: TraceAbstraction took 6207.99 ms. Allocated memory was 203.4 MB in the beginning and 275.8 MB in the end (delta: 72.4 MB). Free memory was 156.9 MB in the beginning and 153.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 75.5 MB. Max. memory is 7.1 GB. [2019-10-15 02:56:29,170 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory is still 120.6 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 380.00 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 102.2 MB in the beginning and 181.0 MB in the end (delta: -78.8 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 44.11 ms. Allocated memory is still 203.4 MB. Free memory was 181.0 MB in the beginning and 179.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 474.57 ms. Allocated memory is still 203.4 MB. Free memory was 179.1 MB in the beginning and 156.9 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6207.99 ms. Allocated memory was 203.4 MB in the beginning and 275.8 MB in the end (delta: 72.4 MB). Free memory was 156.9 MB in the beginning and 153.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 75.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.UnsupportedOperationException: expected NNF de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.UnsupportedOperationException: expected NNF: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...