/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=NARROWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ss4f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 22:02:04,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 22:02:04,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 22:02:04,245 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 22:02:04,246 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 22:02:04,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 22:02:04,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 22:02:04,261 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 22:02:04,264 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 22:02:04,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 22:02:04,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 22:02:04,269 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 22:02:04,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 22:02:04,272 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 22:02:04,275 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 22:02:04,276 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 22:02:04,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 22:02:04,279 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 22:02:04,280 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 22:02:04,289 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 22:02:04,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 22:02:04,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 22:02:04,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 22:02:04,294 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 22:02:04,307 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 22:02:04,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 22:02:04,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 22:02:04,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 22:02:04,329 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 22:02:04,375 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 22:02:04,375 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 22:02:04,376 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 22:02:04,377 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 22:02:04,377 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 22:02:04,377 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 22:02:04,377 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 22:02:04,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 22:02:04,378 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 22:02:04,378 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 22:02:04,379 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 22:02:04,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 22:02:04,380 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 22:02:04,380 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 22:02:04,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 22:02:04,381 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 22:02:04,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 22:02:04,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 22:02:04,381 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 22:02:04,382 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 22:02:04,382 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 22:02:04,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:02:04,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 22:02:04,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 22:02:04,383 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 22:02:04,383 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 22:02:04,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 22:02:04,383 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 22:02:04,383 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 22:02:04,383 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=NARROWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=NARROWEST; [2020-08-18 22:02:04,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 22:02:04,719 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 22:02:04,724 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 22:02:04,726 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 22:02:04,727 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 22:02:04,727 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss4f.c [2020-08-18 22:02:04,791 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c96ebe7ce/7f71bc879917436684db1b0beb7308ba/FLAGd3c5b24ff [2020-08-18 22:02:05,235 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 22:02:05,236 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ss4f.c [2020-08-18 22:02:05,243 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c96ebe7ce/7f71bc879917436684db1b0beb7308ba/FLAGd3c5b24ff [2020-08-18 22:02:05,642 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c96ebe7ce/7f71bc879917436684db1b0beb7308ba [2020-08-18 22:02:05,652 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 22:02:05,654 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 22:02:05,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 22:02:05,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 22:02:05,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 22:02:05,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:02:05" (1/1) ... [2020-08-18 22:02:05,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3af6e236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:02:05, skipping insertion in model container [2020-08-18 22:02:05,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:02:05" (1/1) ... [2020-08-18 22:02:05,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 22:02:05,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 22:02:05,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:02:05,903 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 22:02:05,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:02:05,942 INFO L208 MainTranslator]: Completed translation [2020-08-18 22:02:05,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:02:05 WrapperNode [2020-08-18 22:02:05,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 22:02:05,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 22:02:05,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 22:02:05,944 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 22:02:06,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:02:05" (1/1) ... [2020-08-18 22:02:06,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:02:05" (1/1) ... [2020-08-18 22:02:06,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:02:05" (1/1) ... [2020-08-18 22:02:06,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:02:05" (1/1) ... [2020-08-18 22:02:06,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:02:05" (1/1) ... [2020-08-18 22:02:06,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:02:05" (1/1) ... [2020-08-18 22:02:06,065 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:02:05" (1/1) ... [2020-08-18 22:02:06,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 22:02:06,068 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 22:02:06,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 22:02:06,069 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 22:02:06,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:02:05" (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 22:02:06,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 22:02:06,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 22:02:06,142 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 22:02:06,142 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 22:02:06,142 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 22:02:06,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 22:02:06,142 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 22:02:06,142 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 22:02:06,143 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 22:02:06,143 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 22:02:06,143 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 22:02:06,143 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 22:02:06,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 22:02:06,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 22:02:06,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 22:02:06,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 22:02:06,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 22:02:06,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 22:02:06,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 22:02:06,454 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 22:02:06,455 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 22:02:06,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:02:06 BoogieIcfgContainer [2020-08-18 22:02:06,460 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 22:02:06,461 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 22:02:06,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 22:02:06,464 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 22:02:06,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:02:05" (1/3) ... [2020-08-18 22:02:06,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@178db6f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:02:06, skipping insertion in model container [2020-08-18 22:02:06,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:02:05" (2/3) ... [2020-08-18 22:02:06,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@178db6f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:02:06, skipping insertion in model container [2020-08-18 22:02:06,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:02:06" (3/3) ... [2020-08-18 22:02:06,468 INFO L109 eAbstractionObserver]: Analyzing ICFG ss4f.c [2020-08-18 22:02:06,482 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 22:02:06,490 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 22:02:06,507 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 22:02:06,533 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 22:02:06,533 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 22:02:06,533 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 22:02:06,534 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 22:02:06,534 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 22:02:06,534 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 22:02:06,534 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 22:02:06,534 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 22:02:06,554 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-08-18 22:02:06,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 22:02:06,561 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:02:06,563 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] [2020-08-18 22:02:06,563 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:02:06,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:02:06,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1562148239, now seen corresponding path program 1 times [2020-08-18 22:02:06,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:02:06,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428621885] [2020-08-18 22:02:06,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:02:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:02:06,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:02:06,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:02:06,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 22:02:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:02:06,821 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 22:02:06,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428621885] [2020-08-18 22:02:06,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:02:06,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 22:02:06,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242196404] [2020-08-18 22:02:06,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 22:02:06,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:02:06,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 22:02:06,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 22:02:06,866 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-08-18 22:02:07,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:02:07,042 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-08-18 22:02:07,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 22:02:07,045 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-08-18 22:02:07,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:02:07,059 INFO L225 Difference]: With dead ends: 64 [2020-08-18 22:02:07,061 INFO L226 Difference]: Without dead ends: 30 [2020-08-18 22:02:07,065 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 22:02:07,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-18 22:02:07,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-08-18 22:02:07,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-18 22:02:07,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-08-18 22:02:07,123 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25 [2020-08-18 22:02:07,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:02:07,124 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-08-18 22:02:07,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 22:02:07,124 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-08-18 22:02:07,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 22:02:07,126 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:02:07,126 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] [2020-08-18 22:02:07,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 22:02:07,127 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:02:07,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:02:07,128 INFO L82 PathProgramCache]: Analyzing trace with hash 369304979, now seen corresponding path program 1 times [2020-08-18 22:02:07,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:02:07,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548246883] [2020-08-18 22:02:07,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:02:07,172 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-18 22:02:07,172 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-18 22:02:07,173 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 22:02:07,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 22:02:07,192 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-18 22:02:07,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:02:07 BoogieIcfgContainer [2020-08-18 22:02:07,192 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 22:02:07,195 INFO L168 Benchmark]: Toolchain (without parser) took 1540.65 ms. Allocated memory was 140.5 MB in the beginning and 201.9 MB in the end (delta: 61.3 MB). Free memory was 101.8 MB in the beginning and 128.1 MB in the end (delta: -26.3 MB). Peak memory consumption was 35.0 MB. Max. memory is 7.1 GB. [2020-08-18 22:02:07,196 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-08-18 22:02:07,197 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.03 ms. Allocated memory is still 140.5 MB. Free memory was 101.8 MB in the beginning and 90.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-08-18 22:02:07,199 INFO L168 Benchmark]: Boogie Preprocessor took 124.79 ms. Allocated memory was 140.5 MB in the beginning and 201.9 MB in the end (delta: 61.3 MB). Free memory was 90.9 MB in the beginning and 179.2 MB in the end (delta: -88.4 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-08-18 22:02:07,200 INFO L168 Benchmark]: RCFGBuilder took 391.51 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 160.9 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. [2020-08-18 22:02:07,201 INFO L168 Benchmark]: TraceAbstraction took 731.47 ms. Allocated memory is still 201.9 MB. Free memory was 160.0 MB in the beginning and 128.1 MB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 7.1 GB. [2020-08-18 22:02:07,205 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 288.03 ms. Allocated memory is still 140.5 MB. Free memory was 101.8 MB in the beginning and 90.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.79 ms. Allocated memory was 140.5 MB in the beginning and 201.9 MB in the end (delta: 61.3 MB). Free memory was 90.9 MB in the beginning and 179.2 MB in the end (delta: -88.4 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 391.51 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 160.9 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 731.47 ms. Allocated memory is still 201.9 MB. Free memory was 160.0 MB in the beginning and 128.1 MB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 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 FALSE !(i