/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.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/ss1f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 18:05:17,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 18:05:17,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 18:05:17,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 18:05:17,142 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 18:05:17,144 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 18:05:17,146 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 18:05:17,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 18:05:17,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 18:05:17,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 18:05:17,164 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 18:05:17,166 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 18:05:17,166 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 18:05:17,168 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 18:05:17,170 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 18:05:17,171 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 18:05:17,172 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 18:05:17,173 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 18:05:17,174 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 18:05:17,178 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 18:05:17,183 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 18:05:17,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 18:05:17,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 18:05:17,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 18:05:17,190 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 18:05:17,190 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 18:05:17,190 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 18:05:17,192 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 18:05:17,193 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 18:05:17,194 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 18:05:17,194 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 18:05:17,195 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 18:05:17,196 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 18:05:17,197 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 18:05:17,198 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 18:05:17,198 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 18:05:17,199 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 18:05:17,199 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 18:05:17,199 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 18:05:17,200 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 18:05:17,201 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 18:05:17,202 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 18:05:17,223 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 18:05:17,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 18:05:17,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 18:05:17,226 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 18:05:17,226 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 18:05:17,226 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 18:05:17,226 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 18:05:17,226 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 18:05:17,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 18:05:17,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 18:05:17,227 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 18:05:17,227 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 18:05:17,232 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 18:05:17,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 18:05:17,235 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 18:05:17,235 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 18:05:17,236 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 18:05:17,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 18:05:17,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 18:05:17,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 18:05:17,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 18:05:17,237 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 18:05:17,237 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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: Use separate solver for trace checks -> true [2020-07-17 18:05:17,532 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 18:05:17,548 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 18:05:17,551 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 18:05:17,553 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 18:05:17,553 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 18:05:17,554 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss1f.c [2020-07-17 18:05:17,628 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c39635bf/e67ee950029c4e429d965f8a1c1031f2/FLAG1fba84cb2 [2020-07-17 18:05:18,078 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 18:05:18,079 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ss1f.c [2020-07-17 18:05:18,085 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c39635bf/e67ee950029c4e429d965f8a1c1031f2/FLAG1fba84cb2 [2020-07-17 18:05:18,465 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c39635bf/e67ee950029c4e429d965f8a1c1031f2 [2020-07-17 18:05:18,475 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 18:05:18,478 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 18:05:18,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 18:05:18,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 18:05:18,485 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 18:05:18,486 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 06:05:18" (1/1) ... [2020-07-17 18:05:18,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b355e4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:05:18, skipping insertion in model container [2020-07-17 18:05:18,489 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 06:05:18" (1/1) ... [2020-07-17 18:05:18,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 18:05:18,518 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 18:05:18,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 18:05:18,739 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 18:05:18,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 18:05:18,774 INFO L208 MainTranslator]: Completed translation [2020-07-17 18:05:18,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:05:18 WrapperNode [2020-07-17 18:05:18,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 18:05:18,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 18:05:18,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 18:05:18,775 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 18:05:18,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:05:18" (1/1) ... [2020-07-17 18:05:18,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:05:18" (1/1) ... [2020-07-17 18:05:18,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:05:18" (1/1) ... [2020-07-17 18:05:18,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:05:18" (1/1) ... [2020-07-17 18:05:18,886 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:05:18" (1/1) ... [2020-07-17 18:05:18,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:05:18" (1/1) ... [2020-07-17 18:05:18,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:05:18" (1/1) ... [2020-07-17 18:05:18,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 18:05:18,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 18:05:18,902 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 18:05:18,902 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 18:05:18,903 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:05:18" (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 [2020-07-17 18:05:18,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 18:05:18,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 18:05:18,956 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-17 18:05:18,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 18:05:18,956 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 18:05:18,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 18:05:18,957 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 18:05:18,957 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-17 18:05:18,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 18:05:18,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 18:05:18,957 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 18:05:18,957 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 18:05:18,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 18:05:18,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 18:05:18,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 18:05:18,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 18:05:18,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 18:05:18,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 18:05:18,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 18:05:19,246 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 18:05:19,247 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-17 18:05:19,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 06:05:19 BoogieIcfgContainer [2020-07-17 18:05:19,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 18:05:19,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 18:05:19,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 18:05:19,256 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 18:05:19,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 06:05:18" (1/3) ... [2020-07-17 18:05:19,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a0fa298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 06:05:19, skipping insertion in model container [2020-07-17 18:05:19,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:05:18" (2/3) ... [2020-07-17 18:05:19,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a0fa298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 06:05:19, skipping insertion in model container [2020-07-17 18:05:19,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 06:05:19" (3/3) ... [2020-07-17 18:05:19,260 INFO L109 eAbstractionObserver]: Analyzing ICFG ss1f.c [2020-07-17 18:05:19,272 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 18:05:19,279 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 18:05:19,311 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 18:05:19,343 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 18:05:19,343 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 18:05:19,343 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-17 18:05:19,343 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 18:05:19,344 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 18:05:19,344 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 18:05:19,344 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 18:05:19,344 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 18:05:19,360 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-07-17 18:05:19,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-17 18:05:19,369 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:05:19,370 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] [2020-07-17 18:05:19,370 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:05:19,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:05:19,375 INFO L82 PathProgramCache]: Analyzing trace with hash 441507982, now seen corresponding path program 1 times [2020-07-17 18:05:19,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:05:19,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980123476] [2020-07-17 18:05:19,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:05:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:05:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:05:19,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:05:19,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 18:05:19,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980123476] [2020-07-17 18:05:19,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 18:05:19,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 18:05:19,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754523123] [2020-07-17 18:05:19,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 18:05:19,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:05:19,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 18:05:19,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 18:05:19,632 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-07-17 18:05:19,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:05:19,820 INFO L93 Difference]: Finished difference Result 135 states and 154 transitions. [2020-07-17 18:05:19,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 18:05:19,822 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-07-17 18:05:19,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:05:19,831 INFO L225 Difference]: With dead ends: 135 [2020-07-17 18:05:19,832 INFO L226 Difference]: Without dead ends: 64 [2020-07-17 18:05:19,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 18:05:19,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-07-17 18:05:19,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-07-17 18:05:19,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-07-17 18:05:19,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2020-07-17 18:05:19,882 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 35 [2020-07-17 18:05:19,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:05:19,883 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2020-07-17 18:05:19,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 18:05:19,883 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2020-07-17 18:05:19,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-17 18:05:19,885 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:05:19,885 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] [2020-07-17 18:05:19,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 18:05:19,885 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:05:19,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:05:19,886 INFO L82 PathProgramCache]: Analyzing trace with hash 280562238, now seen corresponding path program 1 times [2020-07-17 18:05:19,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:05:19,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793963166] [2020-07-17 18:05:19,887 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:05:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:05:20,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:05:20,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:05:20,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 18:05:20,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793963166] [2020-07-17 18:05:20,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 18:05:20,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 18:05:20,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282036586] [2020-07-17 18:05:20,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 18:05:20,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:05:20,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 18:05:20,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-17 18:05:20,018 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand 5 states. [2020-07-17 18:05:20,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:05:20,255 INFO L93 Difference]: Finished difference Result 128 states and 137 transitions. [2020-07-17 18:05:20,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 18:05:20,256 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-07-17 18:05:20,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:05:20,258 INFO L225 Difference]: With dead ends: 128 [2020-07-17 18:05:20,258 INFO L226 Difference]: Without dead ends: 92 [2020-07-17 18:05:20,259 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 [2020-07-17 18:05:20,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-07-17 18:05:20,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 68. [2020-07-17 18:05:20,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-17 18:05:20,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions. [2020-07-17 18:05:20,275 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 35 [2020-07-17 18:05:20,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:05:20,276 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 71 transitions. [2020-07-17 18:05:20,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 18:05:20,276 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 71 transitions. [2020-07-17 18:05:20,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-07-17 18:05:20,281 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:05:20,281 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, 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] [2020-07-17 18:05:20,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 18:05:20,282 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:05:20,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:05:20,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1152052174, now seen corresponding path program 1 times [2020-07-17 18:05:20,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:05:20,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559873153] [2020-07-17 18:05:20,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:05:20,334 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-17 18:05:20,334 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-07-17 18:05:20,334 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 18:05:20,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 18:05:20,365 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-07-17 18:05:20,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 06:05:20 BoogieIcfgContainer [2020-07-17 18:05:20,365 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 18:05:20,368 INFO L168 Benchmark]: Toolchain (without parser) took 1890.56 ms. Allocated memory was 137.4 MB in the beginning and 232.3 MB in the end (delta: 94.9 MB). Free memory was 102.1 MB in the beginning and 195.0 MB in the end (delta: -92.9 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-07-17 18:05:20,369 INFO L168 Benchmark]: CDTParser took 0.83 ms. Allocated memory is still 137.4 MB. Free memory is still 120.4 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-17 18:05:20,370 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.38 ms. Allocated memory is still 137.4 MB. Free memory was 101.7 MB in the beginning and 90.6 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-07-17 18:05:20,371 INFO L168 Benchmark]: Boogie Preprocessor took 126.42 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 90.6 MB in the beginning and 178.2 MB in the end (delta: -87.6 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-07-17 18:05:20,372 INFO L168 Benchmark]: RCFGBuilder took 350.11 ms. Allocated memory is still 200.8 MB. Free memory was 178.2 MB in the beginning and 156.9 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-07-17 18:05:20,373 INFO L168 Benchmark]: TraceAbstraction took 1112.83 ms. Allocated memory was 200.8 MB in the beginning and 232.3 MB in the end (delta: 31.5 MB). Free memory was 156.9 MB in the beginning and 195.0 MB in the end (delta: -38.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-17 18:05:20,377 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.83 ms. Allocated memory is still 137.4 MB. Free memory is still 120.4 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 295.38 ms. Allocated memory is still 137.4 MB. Free memory was 101.7 MB in the beginning and 90.6 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.42 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 90.6 MB in the beginning and 178.2 MB in the end (delta: -87.6 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 350.11 ms. Allocated memory is still 200.8 MB. Free memory was 178.2 MB in the beginning and 156.9 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1112.83 ms. Allocated memory was 200.8 MB in the beginning and 232.3 MB in the end (delta: 31.5 MB). Free memory was 156.9 MB in the beginning and 195.0 MB in the end (delta: -38.1 MB). There was no memory consumed. 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