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/reducercommutativity/rangesum20.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 15:25:37,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 15:25:37,962 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 15:25:37,979 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 15:25:37,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 15:25:37,982 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 15:25:37,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 15:25:37,993 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 15:25:37,998 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 15:25:38,000 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 15:25:38,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 15:25:38,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 15:25:38,002 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 15:25:38,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 15:25:38,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 15:25:38,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 15:25:38,005 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 15:25:38,006 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 15:25:38,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 15:25:38,009 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 15:25:38,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 15:25:38,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 15:25:38,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 15:25:38,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 15:25:38,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 15:25:38,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 15:25:38,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 15:25:38,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 15:25:38,024 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 [2019-10-07 15:25:38,037 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 15:25:38,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 15:25:38,038 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 15:25:38,038 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 15:25:38,038 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 15:25:38,039 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 15:25:38,039 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 15:25:38,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 15:25:38,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 15:25:38,040 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 15:25:38,040 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 15:25:38,040 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 15:25:38,040 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 15:25:38,040 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 15:25:38,041 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 15:25:38,041 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 15:25:38,041 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 15:25:38,041 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 15:25:38,041 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 15:25:38,042 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 15:25:38,042 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 15:25:38,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 15:25:38,042 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 15:25:38,042 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 15:25:38,043 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 15:25:38,043 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 15:25:38,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 15:25:38,043 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 15:25:38,043 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 [2019-10-07 15:25:38,320 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 15:25:38,333 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 15:25:38,336 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 15:25:38,338 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 15:25:38,338 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 15:25:38,339 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/rangesum20.i [2019-10-07 15:25:38,399 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12176e403/5da38aa382cd4683a6949c730f49478e/FLAG71b5f1007 [2019-10-07 15:25:38,824 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 15:25:38,825 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/rangesum20.i [2019-10-07 15:25:38,831 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12176e403/5da38aa382cd4683a6949c730f49478e/FLAG71b5f1007 [2019-10-07 15:25:39,226 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12176e403/5da38aa382cd4683a6949c730f49478e [2019-10-07 15:25:39,236 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 15:25:39,238 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 15:25:39,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 15:25:39,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 15:25:39,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 15:25:39,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:25:39" (1/1) ... [2019-10-07 15:25:39,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@262c77e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:25:39, skipping insertion in model container [2019-10-07 15:25:39,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:25:39" (1/1) ... [2019-10-07 15:25:39,254 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 15:25:39,275 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 15:25:39,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 15:25:39,486 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 15:25:39,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 15:25:39,526 INFO L192 MainTranslator]: Completed translation [2019-10-07 15:25:39,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:25:39 WrapperNode [2019-10-07 15:25:39,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 15:25:39,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 15:25:39,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 15:25:39,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 15:25:39,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:25:39" (1/1) ... [2019-10-07 15:25:39,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:25:39" (1/1) ... [2019-10-07 15:25:39,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:25:39" (1/1) ... [2019-10-07 15:25:39,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:25:39" (1/1) ... [2019-10-07 15:25:39,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:25:39" (1/1) ... [2019-10-07 15:25:39,656 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:25:39" (1/1) ... [2019-10-07 15:25:39,658 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:25:39" (1/1) ... [2019-10-07 15:25:39,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 15:25:39,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 15:25:39,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 15:25:39,661 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 15:25:39,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:25:39" (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 [2019-10-07 15:25:39,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 15:25:39,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 15:25:39,716 INFO L138 BoogieDeclarations]: Found implementation of procedure init_nondet [2019-10-07 15:25:39,716 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2019-10-07 15:25:39,716 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 15:25:39,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 15:25:39,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 15:25:39,717 INFO L130 BoogieDeclarations]: Found specification of procedure init_nondet [2019-10-07 15:25:39,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 15:25:39,717 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2019-10-07 15:25:39,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 15:25:39,717 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 15:25:39,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 15:25:39,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 15:25:39,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 15:25:39,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 15:25:40,116 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 15:25:40,116 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-07 15:25:40,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:25:40 BoogieIcfgContainer [2019-10-07 15:25:40,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 15:25:40,119 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 15:25:40,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 15:25:40,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 15:25:40,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:25:39" (1/3) ... [2019-10-07 15:25:40,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c53343d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:25:40, skipping insertion in model container [2019-10-07 15:25:40,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:25:39" (2/3) ... [2019-10-07 15:25:40,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c53343d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:25:40, skipping insertion in model container [2019-10-07 15:25:40,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:25:40" (3/3) ... [2019-10-07 15:25:40,125 INFO L109 eAbstractionObserver]: Analyzing ICFG rangesum20.i [2019-10-07 15:25:40,137 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 15:25:40,156 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 15:25:40,167 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 15:25:40,191 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 15:25:40,191 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 15:25:40,191 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 15:25:40,192 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 15:25:40,192 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 15:25:40,192 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 15:25:40,192 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 15:25:40,192 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 15:25:40,210 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-10-07 15:25:40,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-07 15:25:40,216 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:25:40,217 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:25:40,219 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:25:40,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:25:40,225 INFO L82 PathProgramCache]: Analyzing trace with hash 156737714, now seen corresponding path program 1 times [2019-10-07 15:25:40,233 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:25:40,234 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:25:40,234 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:25:40,234 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:25:40,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:25:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:25:40,378 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:25:40,379 INFO L325 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2019-10-07 15:25:40,379 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 15:25:40,380 INFO L95 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 [2019-10-07 15:25:40,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:25:40,468 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-07 15:25:40,478 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 15:25:40,533 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-07 15:25:40,533 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 15:25:40,591 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-07 15:25:40,594 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:25:40,594 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-10-07 15:25:40,602 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 15:25:40,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 15:25:40,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 15:25:40,621 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 4 states. [2019-10-07 15:25:40,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:25:40,674 INFO L93 Difference]: Finished difference Result 48 states and 59 transitions. [2019-10-07 15:25:40,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 15:25:40,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2019-10-07 15:25:40,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:25:40,684 INFO L225 Difference]: With dead ends: 48 [2019-10-07 15:25:40,684 INFO L226 Difference]: Without dead ends: 25 [2019-10-07 15:25:40,688 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 15:25:40,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-07 15:25:40,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-10-07 15:25:40,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-07 15:25:40,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2019-10-07 15:25:40,727 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 28 [2019-10-07 15:25:40,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:25:40,728 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2019-10-07 15:25:40,728 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 15:25:40,728 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2019-10-07 15:25:40,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-07 15:25:40,730 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:25:40,731 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:25:40,940 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:25:40,940 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:25:40,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:25:40,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1219753554, now seen corresponding path program 1 times [2019-10-07 15:25:40,943 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:25:40,943 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:25:40,943 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:25:40,943 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:25:40,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:25:40,973 ERROR L261 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-07 15:25:40,974 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Benchmark is only available after the trace check is finished. at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.getStatistics(TraceCheck.java:457) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheck.getStatistics(InterpolatingTraceCheck.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleTraceCheck.aggregateStatistics(IpTcStrategyModuleTraceCheck.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.checkFeasibility(TraceAbstractionRefinementEngine.java:244) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:153) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-10-07 15:25:40,979 INFO L168 Benchmark]: Toolchain (without parser) took 1740.23 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 103.6 MB in the beginning and 117.1 MB in the end (delta: -13.5 MB). Peak memory consumption was 44.7 MB. Max. memory is 7.1 GB. [2019-10-07 15:25:40,980 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 146.3 MB. Free memory was 122.7 MB in the beginning and 122.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 15:25:40,981 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.63 ms. Allocated memory is still 146.3 MB. Free memory was 103.4 MB in the beginning and 93.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2019-10-07 15:25:40,982 INFO L168 Benchmark]: Boogie Preprocessor took 133.42 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 93.1 MB in the beginning and 182.1 MB in the end (delta: -89.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-10-07 15:25:40,983 INFO L168 Benchmark]: RCFGBuilder took 457.27 ms. Allocated memory is still 204.5 MB. Free memory was 182.1 MB in the beginning and 157.3 MB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2019-10-07 15:25:40,984 INFO L168 Benchmark]: TraceAbstraction took 857.77 ms. Allocated memory is still 204.5 MB. Free memory was 157.3 MB in the beginning and 117.1 MB in the end (delta: 40.2 MB). Peak memory consumption was 40.2 MB. Max. memory is 7.1 GB. [2019-10-07 15:25:40,989 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 146.3 MB. Free memory was 122.7 MB in the beginning and 122.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 287.63 ms. Allocated memory is still 146.3 MB. Free memory was 103.4 MB in the beginning and 93.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.42 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 93.1 MB in the beginning and 182.1 MB in the end (delta: -89.0 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 457.27 ms. Allocated memory is still 204.5 MB. Free memory was 182.1 MB in the beginning and 157.3 MB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 857.77 ms. Allocated memory is still 204.5 MB. Free memory was 157.3 MB in the beginning and 117.1 MB in the end (delta: 40.2 MB). Peak memory consumption was 40.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Benchmark is only available after the trace check is finished. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Benchmark is only available after the trace check is finished.: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.getStatistics(TraceCheck.java:457) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...