/usr/bin/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/array-tiling/skipped.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 01:33:14,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 01:33:14,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 01:33:14,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 01:33:14,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 01:33:14,548 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 01:33:14,550 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 01:33:14,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 01:33:14,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 01:33:14,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 01:33:14,568 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 01:33:14,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 01:33:14,572 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 01:33:14,574 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 01:33:14,576 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 01:33:14,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 01:33:14,579 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 01:33:14,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 01:33:14,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 01:33:14,586 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 01:33:14,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 01:33:14,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 01:33:14,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 01:33:14,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 01:33:14,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 01:33:14,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 01:33:14,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 01:33:14,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 01:33:14,610 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 [2019-11-07 01:33:14,645 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 01:33:14,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 01:33:14,646 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 01:33:14,647 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 01:33:14,647 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 01:33:14,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 01:33:14,647 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 01:33:14,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 01:33:14,648 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 01:33:14,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 01:33:14,651 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 01:33:14,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 01:33:14,651 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 01:33:14,652 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 01:33:14,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 01:33:14,652 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 01:33:14,652 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 01:33:14,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 01:33:14,653 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 01:33:14,653 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 01:33:14,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 01:33:14,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 01:33:14,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 01:33:14,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 01:33:14,655 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 01:33:14,655 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 01:33:14,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 01:33:14,655 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 01:33:14,655 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 [2019-11-07 01:33:14,933 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 01:33:14,947 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 01:33:14,950 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 01:33:14,952 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 01:33:14,953 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 01:33:14,953 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/skipped.c [2019-11-07 01:33:15,034 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd707583e/5df166cc74094f53a3fd273be08fbf98/FLAGcf4a48f74 [2019-11-07 01:33:15,522 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 01:33:15,523 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/skipped.c [2019-11-07 01:33:15,529 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd707583e/5df166cc74094f53a3fd273be08fbf98/FLAGcf4a48f74 [2019-11-07 01:33:15,888 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd707583e/5df166cc74094f53a3fd273be08fbf98 [2019-11-07 01:33:15,914 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 01:33:15,918 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 01:33:15,924 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 01:33:15,924 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 01:33:15,933 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 01:33:15,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:33:15" (1/1) ... [2019-11-07 01:33:15,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4398e13a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:15, skipping insertion in model container [2019-11-07 01:33:15,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:33:15" (1/1) ... [2019-11-07 01:33:15,962 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 01:33:16,008 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 01:33:16,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:33:16,263 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 01:33:16,283 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:33:16,388 INFO L192 MainTranslator]: Completed translation [2019-11-07 01:33:16,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:16 WrapperNode [2019-11-07 01:33:16,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 01:33:16,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 01:33:16,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 01:33:16,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 01:33:16,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:16" (1/1) ... [2019-11-07 01:33:16,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:16" (1/1) ... [2019-11-07 01:33:16,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:16" (1/1) ... [2019-11-07 01:33:16,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:16" (1/1) ... [2019-11-07 01:33:16,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:16" (1/1) ... [2019-11-07 01:33:16,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:16" (1/1) ... [2019-11-07 01:33:16,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:16" (1/1) ... [2019-11-07 01:33:16,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 01:33:16,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 01:33:16,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 01:33:16,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 01:33:16,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:16" (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 [2019-11-07 01:33:16,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 01:33:16,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 01:33:16,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-07 01:33:16,492 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 01:33:16,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 01:33:16,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 01:33:16,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-07 01:33:16,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 01:33:16,493 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 01:33:16,494 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 01:33:16,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 01:33:16,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 01:33:16,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 01:33:16,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 01:33:16,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 01:33:16,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 01:33:16,952 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 01:33:16,952 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-07 01:33:16,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:33:16 BoogieIcfgContainer [2019-11-07 01:33:16,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 01:33:16,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 01:33:16,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 01:33:16,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 01:33:16,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:33:15" (1/3) ... [2019-11-07 01:33:16,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a821172 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:33:16, skipping insertion in model container [2019-11-07 01:33:16,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:33:16" (2/3) ... [2019-11-07 01:33:16,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a821172 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:33:16, skipping insertion in model container [2019-11-07 01:33:16,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:33:16" (3/3) ... [2019-11-07 01:33:16,962 INFO L109 eAbstractionObserver]: Analyzing ICFG skipped.c [2019-11-07 01:33:16,973 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 01:33:16,981 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 01:33:16,992 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 01:33:17,017 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 01:33:17,018 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 01:33:17,018 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 01:33:17,018 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 01:33:17,018 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 01:33:17,018 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 01:33:17,019 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 01:33:17,019 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 01:33:17,037 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-11-07 01:33:17,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-07 01:33:17,043 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:33:17,044 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:33:17,046 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:33:17,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:33:17,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1622495605, now seen corresponding path program 1 times [2019-11-07 01:33:17,059 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:33:17,059 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140467005] [2019-11-07 01:33:17,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:33:17,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:33:17,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:33:17,279 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140467005] [2019-11-07 01:33:17,280 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:33:17,281 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 01:33:17,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970388088] [2019-11-07 01:33:17,289 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:33:17,289 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:33:17,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:33:17,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:33:17,313 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2019-11-07 01:33:17,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:33:17,402 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2019-11-07 01:33:17,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:33:17,404 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-11-07 01:33:17,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:33:17,416 INFO L225 Difference]: With dead ends: 40 [2019-11-07 01:33:17,416 INFO L226 Difference]: Without dead ends: 19 [2019-11-07 01:33:17,423 INFO L630 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 [2019-11-07 01:33:17,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-07 01:33:17,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-11-07 01:33:17,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-07 01:33:17,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-11-07 01:33:17,475 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 14 [2019-11-07 01:33:17,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:33:17,476 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-11-07 01:33:17,476 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:33:17,477 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-11-07 01:33:17,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-07 01:33:17,479 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:33:17,479 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:33:17,480 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:33:17,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:33:17,481 INFO L82 PathProgramCache]: Analyzing trace with hash 635448652, now seen corresponding path program 1 times [2019-11-07 01:33:17,481 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:33:17,481 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518717273] [2019-11-07 01:33:17,482 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:33:17,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:33:17,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 01:33:17,603 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518717273] [2019-11-07 01:33:17,603 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:33:17,603 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 01:33:17,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077503694] [2019-11-07 01:33:17,607 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 01:33:17,607 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:33:17,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 01:33:17,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-07 01:33:17,608 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 4 states. [2019-11-07 01:33:17,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:33:17,658 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2019-11-07 01:33:17,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 01:33:17,659 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-11-07 01:33:17,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:33:17,660 INFO L225 Difference]: With dead ends: 29 [2019-11-07 01:33:17,660 INFO L226 Difference]: Without dead ends: 20 [2019-11-07 01:33:17,661 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-07 01:33:17,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-07 01:33:17,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-07 01:33:17,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-07 01:33:17,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2019-11-07 01:33:17,670 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 15 [2019-11-07 01:33:17,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:33:17,671 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2019-11-07 01:33:17,671 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 01:33:17,671 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2019-11-07 01:33:17,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-07 01:33:17,672 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:33:17,672 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:33:17,672 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:33:17,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:33:17,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1863783115, now seen corresponding path program 1 times [2019-11-07 01:33:17,673 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:33:17,674 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189417652] [2019-11-07 01:33:17,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:33:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:33:17,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 01:33:17,758 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189417652] [2019-11-07 01:33:17,758 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845906787] [2019-11-07 01:33:17,758 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 [2019-11-07 01:33:17,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:33:17,823 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-07 01:33:17,829 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 01:33:17,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 01:33:17,881 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 01:33:17,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 01:33:17,915 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [306761327] [2019-11-07 01:33:17,942 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2019-11-07 01:33:17,942 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 01:33:17,949 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 01:33:17,956 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 01:33:17,956 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 01:33:18,187 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 30 for LOIs [2019-11-07 01:33:18,376 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-07 01:33:18,601 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 01:33:18,603 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:178) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:83) 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:463) 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:277) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive$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$ArrOccFinder.(ArrayOccurrenceAnalysis.java:181) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.(ArrayOccurrenceAnalysis.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.downgradeDimensionsIfNecessary(ArrayOccurrenceAnalysis.java:171) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.computeCostEstimation(ArrayIndexBasedCostEstimation.java:132) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.(ArrayIndexBasedCostEstimation.java:64) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:390) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.quantifier(PartialQuantifierElimination.java:146) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:279) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) 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.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:294) ... 21 more [2019-11-07 01:33:18,619 INFO L168 Benchmark]: Toolchain (without parser) took 2692.64 ms. Allocated memory was 145.8 MB in the beginning and 235.9 MB in the end (delta: 90.2 MB). Free memory was 102.0 MB in the beginning and 189.2 MB in the end (delta: -87.2 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2019-11-07 01:33:18,621 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 145.8 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-07 01:33:18,624 INFO L168 Benchmark]: CACSL2BoogieTranslator took 464.78 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 101.8 MB in the beginning and 182.1 MB in the end (delta: -80.3 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2019-11-07 01:33:18,625 INFO L168 Benchmark]: Boogie Preprocessor took 44.14 ms. Allocated memory is still 203.4 MB. Free memory was 182.1 MB in the beginning and 179.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-11-07 01:33:18,632 INFO L168 Benchmark]: RCFGBuilder took 520.19 ms. Allocated memory is still 203.4 MB. Free memory was 179.8 MB in the beginning and 156.4 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2019-11-07 01:33:18,633 INFO L168 Benchmark]: TraceAbstraction took 1651.50 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 155.8 MB in the beginning and 189.2 MB in the end (delta: -33.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-11-07 01:33:18,650 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 145.8 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 464.78 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 101.8 MB in the beginning and 182.1 MB in the end (delta: -80.3 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 44.14 ms. Allocated memory is still 203.4 MB. Free memory was 182.1 MB in the beginning and 179.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 520.19 ms. Allocated memory is still 203.4 MB. Free memory was 179.8 MB in the beginning and 156.4 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1651.50 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 155.8 MB in the beginning and 189.2 MB in the end (delta: -33.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.NullPointerException de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.NullPointerException: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:302) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...