/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ss2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 19:36:56,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 19:36:56,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 19:36:56,251 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 19:36:56,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 19:36:56,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 19:36:56,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 19:36:56,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 19:36:56,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 19:36:56,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 19:36:56,259 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 19:36:56,260 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 19:36:56,260 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 19:36:56,261 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 19:36:56,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 19:36:56,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 19:36:56,264 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 19:36:56,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 19:36:56,266 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 19:36:56,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 19:36:56,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 19:36:56,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 19:36:56,272 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 19:36:56,273 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 19:36:56,275 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 19:36:56,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 19:36:56,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 19:36:56,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 19:36:56,284 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 19:36:56,306 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 19:36:56,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 19:36:56,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 19:36:56,310 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 19:36:56,310 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 19:36:56,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 19:36:56,311 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 19:36:56,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 19:36:56,311 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 19:36:56,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 19:36:56,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 19:36:56,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 19:36:56,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 19:36:56,312 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 19:36:56,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 19:36:56,312 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 19:36:56,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 19:36:56,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 19:36:56,316 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 19:36:56,316 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 19:36:56,319 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 19:36:56,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 19:36:56,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 19:36:56,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 19:36:56,319 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 19:36:56,320 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 19:36:56,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 19:36:56,320 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 19:36:56,320 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 19:36:56,320 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER; [2020-08-18 19:36:56,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 19:36:56,634 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 19:36:56,637 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 19:36:56,639 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 19:36:56,639 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 19:36:56,640 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss2f.c [2020-08-18 19:36:56,700 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c2143cd4/388ed7f4135b46568917e304a5057a4e/FLAG48c3751cd [2020-08-18 19:36:57,101 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 19:36:57,105 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ss2f.c [2020-08-18 19:36:57,114 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c2143cd4/388ed7f4135b46568917e304a5057a4e/FLAG48c3751cd [2020-08-18 19:36:57,465 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c2143cd4/388ed7f4135b46568917e304a5057a4e [2020-08-18 19:36:57,475 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 19:36:57,477 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 19:36:57,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 19:36:57,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 19:36:57,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 19:36:57,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:36:57" (1/1) ... [2020-08-18 19:36:57,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cd7a508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:36:57, skipping insertion in model container [2020-08-18 19:36:57,486 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:36:57" (1/1) ... [2020-08-18 19:36:57,494 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 19:36:57,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 19:36:57,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:36:57,762 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 19:36:57,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:36:57,890 INFO L208 MainTranslator]: Completed translation [2020-08-18 19:36:57,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:36:57 WrapperNode [2020-08-18 19:36:57,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 19:36:57,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 19:36:57,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 19:36:57,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 19:36:57,903 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:36:57" (1/1) ... [2020-08-18 19:36:57,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:36:57" (1/1) ... [2020-08-18 19:36:57,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:36:57" (1/1) ... [2020-08-18 19:36:57,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:36:57" (1/1) ... [2020-08-18 19:36:57,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:36:57" (1/1) ... [2020-08-18 19:36:57,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:36:57" (1/1) ... [2020-08-18 19:36:57,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:36:57" (1/1) ... [2020-08-18 19:36:57,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 19:36:57,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 19:36:57,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 19:36:57,937 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 19:36:57,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:36:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 19:36:58,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 19:36:58,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 19:36:58,015 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 19:36:58,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 19:36:58,015 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 19:36:58,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 19:36:58,015 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 19:36:58,015 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 19:36:58,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 19:36:58,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 19:36:58,016 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 19:36:58,016 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 19:36:58,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 19:36:58,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 19:36:58,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 19:36:58,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 19:36:58,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 19:36:58,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 19:36:58,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 19:36:58,312 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 19:36:58,312 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-08-18 19:36:58,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:36:58 BoogieIcfgContainer [2020-08-18 19:36:58,318 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 19:36:58,319 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 19:36:58,319 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 19:36:58,326 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 19:36:58,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 07:36:57" (1/3) ... [2020-08-18 19:36:58,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@386a7248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:36:58, skipping insertion in model container [2020-08-18 19:36:58,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:36:57" (2/3) ... [2020-08-18 19:36:58,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@386a7248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:36:58, skipping insertion in model container [2020-08-18 19:36:58,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:36:58" (3/3) ... [2020-08-18 19:36:58,338 INFO L109 eAbstractionObserver]: Analyzing ICFG ss2f.c [2020-08-18 19:36:58,367 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 19:36:58,382 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 19:36:58,414 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 19:36:58,437 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 19:36:58,438 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 19:36:58,438 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 19:36:58,438 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 19:36:58,438 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 19:36:58,438 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 19:36:58,438 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 19:36:58,439 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 19:36:58,458 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-08-18 19:36:58,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-18 19:36:58,463 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:36:58,464 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:36:58,465 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:36:58,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:36:58,471 INFO L82 PathProgramCache]: Analyzing trace with hash -96589013, now seen corresponding path program 1 times [2020-08-18 19:36:58,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:36:58,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586328657] [2020-08-18 19:36:58,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:36:58,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:36:58,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:36:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:36:58,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 19:36:58,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:36:58,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:36:58,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586328657] [2020-08-18 19:36:58,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:36:58,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 19:36:58,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762909251] [2020-08-18 19:36:58,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 19:36:58,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:36:58,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 19:36:58,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 19:36:58,725 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2020-08-18 19:36:58,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:36:58,877 INFO L93 Difference]: Finished difference Result 82 states and 113 transitions. [2020-08-18 19:36:58,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 19:36:58,880 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-08-18 19:36:58,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:36:58,890 INFO L225 Difference]: With dead ends: 82 [2020-08-18 19:36:58,890 INFO L226 Difference]: Without dead ends: 41 [2020-08-18 19:36:58,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 19:36:58,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-08-18 19:36:58,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-08-18 19:36:58,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-08-18 19:36:58,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2020-08-18 19:36:58,941 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 30 [2020-08-18 19:36:58,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:36:58,941 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2020-08-18 19:36:58,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 19:36:58,942 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2020-08-18 19:36:58,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-18 19:36:58,944 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:36:58,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:36:58,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 19:36:58,945 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:36:58,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:36:58,945 INFO L82 PathProgramCache]: Analyzing trace with hash -552343525, now seen corresponding path program 1 times [2020-08-18 19:36:58,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:36:58,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485668530] [2020-08-18 19:36:58,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:36:58,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:36:59,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:36:59,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:36:59,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 19:36:59,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:36:59,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:36:59,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485668530] [2020-08-18 19:36:59,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:36:59,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 19:36:59,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847586526] [2020-08-18 19:36:59,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 19:36:59,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:36:59,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 19:36:59,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 19:36:59,070 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 5 states. [2020-08-18 19:36:59,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:36:59,285 INFO L93 Difference]: Finished difference Result 83 states and 101 transitions. [2020-08-18 19:36:59,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 19:36:59,286 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-08-18 19:36:59,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:36:59,289 INFO L225 Difference]: With dead ends: 83 [2020-08-18 19:36:59,290 INFO L226 Difference]: Without dead ends: 57 [2020-08-18 19:36:59,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-18 19:36:59,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-18 19:36:59,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 47. [2020-08-18 19:36:59,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-18 19:36:59,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-08-18 19:36:59,308 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 30 [2020-08-18 19:36:59,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:36:59,309 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-08-18 19:36:59,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 19:36:59,309 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-08-18 19:36:59,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-08-18 19:36:59,311 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:36:59,311 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:36:59,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 19:36:59,312 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:36:59,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:36:59,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1488976591, now seen corresponding path program 1 times [2020-08-18 19:36:59,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:36:59,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [603772228] [2020-08-18 19:36:59,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:36:59,363 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-18 19:36:59,364 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-18 19:36:59,367 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 19:36:59,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 19:36:59,400 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-18 19:36:59,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 07:36:59 BoogieIcfgContainer [2020-08-18 19:36:59,409 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 19:36:59,415 INFO L168 Benchmark]: Toolchain (without parser) took 1935.01 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 101.6 MB in the beginning and 89.8 MB in the end (delta: 11.8 MB). Peak memory consumption was 75.3 MB. Max. memory is 7.1 GB. [2020-08-18 19:36:59,417 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 19:36:59,418 INFO L168 Benchmark]: CACSL2BoogieTranslator took 412.22 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 101.4 MB in the beginning and 181.2 MB in the end (delta: -79.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-08-18 19:36:59,419 INFO L168 Benchmark]: Boogie Preprocessor took 45.93 ms. Allocated memory is still 202.4 MB. Free memory was 181.2 MB in the beginning and 178.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-08-18 19:36:59,421 INFO L168 Benchmark]: RCFGBuilder took 380.88 ms. Allocated memory is still 202.4 MB. Free memory was 178.6 MB in the beginning and 158.0 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-08-18 19:36:59,423 INFO L168 Benchmark]: TraceAbstraction took 1089.85 ms. Allocated memory is still 202.4 MB. Free memory was 157.3 MB in the beginning and 89.8 MB in the end (delta: 67.5 MB). Peak memory consumption was 67.5 MB. Max. memory is 7.1 GB. [2020-08-18 19:36:59,434 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 412.22 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 101.4 MB in the beginning and 181.2 MB in the end (delta: -79.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 45.93 ms. Allocated memory is still 202.4 MB. Free memory was 181.2 MB in the beginning and 178.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 380.88 ms. Allocated memory is still 202.4 MB. Free memory was 178.6 MB in the beginning and 158.0 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1089.85 ms. Allocated memory is still 202.4 MB. Free memory was 157.3 MB in the beginning and 89.8 MB in the end (delta: 67.5 MB). Peak memory consumption was 67.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] long long *a = malloc(sizeof(long long)*N); [L29] sum[0] = 0 [L30] i=0 [L30] COND TRUE i