/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/eqn4f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 23:09:16,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 23:09:16,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 23:09:16,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 23:09:16,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 23:09:16,652 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 23:09:16,656 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 23:09:16,659 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 23:09:16,662 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 23:09:16,665 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 23:09:16,666 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 23:09:16,667 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 23:09:16,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 23:09:16,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 23:09:16,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 23:09:16,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 23:09:16,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 23:09:16,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 23:09:16,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 23:09:16,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 23:09:16,685 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 23:09:16,686 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 23:09:16,687 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 23:09:16,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 23:09:16,690 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 23:09:16,690 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 23:09:16,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 23:09:16,691 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 23:09:16,692 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 23:09:16,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 23:09:16,693 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 23:09:16,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 23:09:16,694 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 23:09:16,695 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 23:09:16,696 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 23:09:16,696 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 23:09:16,697 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 23:09:16,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 23:09:16,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 23:09:16,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 23:09:16,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 23:09:16,700 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 23:09:16,711 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 23:09:16,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 23:09:16,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 23:09:16,713 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 23:09:16,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 23:09:16,714 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 23:09:16,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 23:09:16,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 23:09:16,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 23:09:16,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 23:09:16,715 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 23:09:16,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 23:09:16,715 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 23:09:16,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 23:09:16,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 23:09:16,716 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 23:09:16,716 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 23:09:16,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 23:09:16,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 23:09:16,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 23:09:16,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 23:09:16,717 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 23:09:16,717 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 [2020-09-04 23:09:17,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 23:09:17,179 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 23:09:17,186 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 23:09:17,188 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 23:09:17,189 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 23:09:17,190 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/eqn4f.c [2020-09-04 23:09:17,281 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c800967e8/68770cfe58d4430cad44ed62a75ef7a1/FLAG2b4299c84 [2020-09-04 23:09:17,831 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 23:09:17,832 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/eqn4f.c [2020-09-04 23:09:17,841 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c800967e8/68770cfe58d4430cad44ed62a75ef7a1/FLAG2b4299c84 [2020-09-04 23:09:18,151 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c800967e8/68770cfe58d4430cad44ed62a75ef7a1 [2020-09-04 23:09:18,165 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 23:09:18,167 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 23:09:18,168 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 23:09:18,168 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 23:09:18,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 23:09:18,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:09:18" (1/1) ... [2020-09-04 23:09:18,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3330734f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:18, skipping insertion in model container [2020-09-04 23:09:18,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:09:18" (1/1) ... [2020-09-04 23:09:18,187 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 23:09:18,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 23:09:18,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:09:18,445 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 23:09:18,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:09:18,488 INFO L208 MainTranslator]: Completed translation [2020-09-04 23:09:18,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:18 WrapperNode [2020-09-04 23:09:18,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 23:09:18,489 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 23:09:18,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 23:09:18,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 23:09:18,581 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:18" (1/1) ... [2020-09-04 23:09:18,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:18" (1/1) ... [2020-09-04 23:09:18,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:18" (1/1) ... [2020-09-04 23:09:18,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:18" (1/1) ... [2020-09-04 23:09:18,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:18" (1/1) ... [2020-09-04 23:09:18,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:18" (1/1) ... [2020-09-04 23:09:18,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:18" (1/1) ... [2020-09-04 23:09:18,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 23:09:18,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 23:09:18,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 23:09:18,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 23:09:18,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:18" (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 [2020-09-04 23:09:18,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 23:09:18,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 23:09:18,701 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 23:09:18,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 23:09:18,701 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 23:09:18,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 23:09:18,702 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 23:09:18,702 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 23:09:18,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 23:09:18,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 23:09:18,703 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 23:09:18,703 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 23:09:18,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 23:09:18,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 23:09:18,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 23:09:18,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 23:09:18,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 23:09:18,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 23:09:19,081 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 23:09:19,082 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-04 23:09:19,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:09:19 BoogieIcfgContainer [2020-09-04 23:09:19,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 23:09:19,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 23:09:19,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 23:09:19,096 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 23:09:19,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 11:09:18" (1/3) ... [2020-09-04 23:09:19,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e6a7fd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:09:19, skipping insertion in model container [2020-09-04 23:09:19,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:18" (2/3) ... [2020-09-04 23:09:19,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e6a7fd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:09:19, skipping insertion in model container [2020-09-04 23:09:19,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:09:19" (3/3) ... [2020-09-04 23:09:19,101 INFO L109 eAbstractionObserver]: Analyzing ICFG eqn4f.c [2020-09-04 23:09:19,113 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 23:09:19,122 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 23:09:19,143 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 23:09:19,175 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 23:09:19,175 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 23:09:19,175 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 23:09:19,176 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 23:09:19,176 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 23:09:19,176 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 23:09:19,176 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 23:09:19,176 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 23:09:19,193 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2020-09-04 23:09:19,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-04 23:09:19,207 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:09:19,209 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] [2020-09-04 23:09:19,209 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:09:19,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:09:19,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1558850377, now seen corresponding path program 1 times [2020-09-04 23:09:19,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:09:19,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003771424] [2020-09-04 23:09:19,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:09:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:19,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:09:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:19,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 23:09:19,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:19,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:09:19,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003771424] [2020-09-04 23:09:19,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:09:19,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 23:09:19,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921253511] [2020-09-04 23:09:19,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 23:09:19,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:09:19,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 23:09:19,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 23:09:19,536 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 3 states. [2020-09-04 23:09:19,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:09:19,750 INFO L93 Difference]: Finished difference Result 109 states and 124 transitions. [2020-09-04 23:09:19,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 23:09:19,753 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-09-04 23:09:19,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:09:19,770 INFO L225 Difference]: With dead ends: 109 [2020-09-04 23:09:19,770 INFO L226 Difference]: Without dead ends: 56 [2020-09-04 23:09:19,777 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 [2020-09-04 23:09:19,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-04 23:09:19,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-09-04 23:09:19,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-04 23:09:19,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2020-09-04 23:09:19,865 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 35 [2020-09-04 23:09:19,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:09:19,868 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2020-09-04 23:09:19,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 23:09:19,868 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2020-09-04 23:09:19,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-04 23:09:19,870 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:09:19,871 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] [2020-09-04 23:09:19,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 23:09:19,872 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:09:19,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:09:19,873 INFO L82 PathProgramCache]: Analyzing trace with hash -574468364, now seen corresponding path program 1 times [2020-09-04 23:09:19,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:09:19,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105283473] [2020-09-04 23:09:19,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:09:19,936 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 23:09:19,937 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-04 23:09:19,937 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 23:09:19,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 23:09:19,978 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-04 23:09:19,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 11:09:19 BoogieIcfgContainer [2020-09-04 23:09:19,978 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 23:09:19,982 INFO L168 Benchmark]: Toolchain (without parser) took 1813.80 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 101.2 MB in the beginning and 120.9 MB in the end (delta: -19.7 MB). Peak memory consumption was 44.3 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:19,984 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 23:09:19,987 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.91 ms. Allocated memory is still 138.4 MB. Free memory was 101.0 MB in the beginning and 90.2 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:19,989 INFO L168 Benchmark]: Boogie Preprocessor took 130.02 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 90.2 MB in the beginning and 180.3 MB in the end (delta: -90.2 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:19,991 INFO L168 Benchmark]: RCFGBuilder took 470.85 ms. Allocated memory is still 202.4 MB. Free memory was 180.3 MB in the beginning and 160.7 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:19,992 INFO L168 Benchmark]: TraceAbstraction took 886.47 ms. Allocated memory is still 202.4 MB. Free memory was 160.7 MB in the beginning and 120.9 MB in the end (delta: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:20,004 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 320.91 ms. Allocated memory is still 138.4 MB. Free memory was 101.0 MB in the beginning and 90.2 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.02 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 90.2 MB in the beginning and 180.3 MB in the end (delta: -90.2 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 470.85 ms. Allocated memory is still 202.4 MB. Free memory was 180.3 MB in the beginning and 160.7 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 886.47 ms. Allocated memory is still 202.4 MB. Free memory was 160.7 MB in the beginning and 120.9 MB in the end (delta: 39.8 MB). Peak memory consumption was 39.8 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 *a = malloc(sizeof(long long)*N); [L27] long long *b = malloc(sizeof(long long)*N); [L29] a[0] = 8 [L30] b[0] = 0 [L31] i=1 [L31] COND FALSE !(i