/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/ss4f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:44:30,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:44:30,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:44:30,812 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:44:30,813 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:44:30,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:44:30,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:44:30,828 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:44:30,831 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:44:30,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:44:30,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:44:30,836 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:44:30,837 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:44:30,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:44:30,841 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:44:30,843 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:44:30,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:44:30,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:44:30,847 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:44:30,854 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:44:30,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:44:30,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:44:30,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:44:30,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:44:30,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 17:44:30,865 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 17:44:30,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 17:44:30,869 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 17:44:30,869 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 17:44:30,870 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-04 17:44:30,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:44:30,878 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:44:30,879 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:44:30,880 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 17:44:30,895 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:44:30,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:44:30,898 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:44:30,899 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:44:30,899 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:44:30,899 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:44:30,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:44:30,900 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:44:30,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:44:30,900 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:44:30,902 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:44:30,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:44:30,902 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:44:30,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:44:30,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:44:30,903 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:44:30,903 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:44:30,903 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:44:30,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:44:30,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:44:30,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:44:30,904 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:44:30,904 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:44:31,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:44:31,351 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:44:31,355 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:44:31,357 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:44:31,358 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:44:31,359 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss4f.c [2020-09-04 17:44:31,446 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9463ff3b/3c55e7af3e084eda81df33c0413956c5/FLAGef2ac60fb [2020-09-04 17:44:31,939 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:44:31,939 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ss4f.c [2020-09-04 17:44:31,946 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9463ff3b/3c55e7af3e084eda81df33c0413956c5/FLAGef2ac60fb [2020-09-04 17:44:32,289 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9463ff3b/3c55e7af3e084eda81df33c0413956c5 [2020-09-04 17:44:32,304 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:44:32,308 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:44:32,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:44:32,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:44:32,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:44:32,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:44:32" (1/1) ... [2020-09-04 17:44:32,321 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3add5f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:32, skipping insertion in model container [2020-09-04 17:44:32,321 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:44:32" (1/1) ... [2020-09-04 17:44:32,331 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:44:32,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:44:32,660 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:44:32,671 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:44:32,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:44:32,718 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:44:32,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:32 WrapperNode [2020-09-04 17:44:32,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:44:32,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:44:32,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:44:32,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:44:32,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:32" (1/1) ... [2020-09-04 17:44:32,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:32" (1/1) ... [2020-09-04 17:44:32,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:32" (1/1) ... [2020-09-04 17:44:32,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:32" (1/1) ... [2020-09-04 17:44:32,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:32" (1/1) ... [2020-09-04 17:44:32,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:32" (1/1) ... [2020-09-04 17:44:32,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:32" (1/1) ... [2020-09-04 17:44:32,858 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:44:32,859 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:44:32,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:44:32,859 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:44:32,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:32" (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 17:44:32,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:44:32,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:44:32,938 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 17:44:32,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 17:44:32,939 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:44:32,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:44:32,939 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 17:44:32,939 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 17:44:32,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 17:44:32,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 17:44:32,940 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 17:44:32,940 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:44:32,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 17:44:32,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 17:44:32,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 17:44:32,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 17:44:32,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 17:44:32,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:44:32,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:44:33,275 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:44:33,276 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-04 17:44:33,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:44:33 BoogieIcfgContainer [2020-09-04 17:44:33,282 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:44:33,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:44:33,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:44:33,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:44:33,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:44:32" (1/3) ... [2020-09-04 17:44:33,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b60c89d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:44:33, skipping insertion in model container [2020-09-04 17:44:33,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:32" (2/3) ... [2020-09-04 17:44:33,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b60c89d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:44:33, skipping insertion in model container [2020-09-04 17:44:33,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:44:33" (3/3) ... [2020-09-04 17:44:33,293 INFO L109 eAbstractionObserver]: Analyzing ICFG ss4f.c [2020-09-04 17:44:33,304 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:44:33,314 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:44:33,359 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:44:33,383 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:44:33,383 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:44:33,384 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:44:33,384 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:44:33,384 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:44:33,384 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:44:33,384 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:44:33,384 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:44:33,402 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states. [2020-09-04 17:44:33,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-04 17:44:33,414 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:33,416 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] [2020-09-04 17:44:33,416 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:33,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:33,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1254588623, now seen corresponding path program 1 times [2020-09-04 17:44:33,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:33,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307492624] [2020-09-04 17:44:33,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:33,512 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:33,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:33,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:44:33,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:33,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:44:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:33,698 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 17:44:33,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307492624] [2020-09-04 17:44:33,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:44:33,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 17:44:33,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206757083] [2020-09-04 17:44:33,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 17:44:33,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:44:33,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 17:44:33,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 17:44:33,733 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 3 states. [2020-09-04 17:44:34,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:44:34,049 INFO L93 Difference]: Finished difference Result 137 states and 156 transitions. [2020-09-04 17:44:34,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 17:44:34,051 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-09-04 17:44:34,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:44:34,062 INFO L225 Difference]: With dead ends: 137 [2020-09-04 17:44:34,063 INFO L226 Difference]: Without dead ends: 65 [2020-09-04 17:44:34,068 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 17:44:34,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-04 17:44:34,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-09-04 17:44:34,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-04 17:44:34,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2020-09-04 17:44:34,128 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 36 [2020-09-04 17:44:34,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:44:34,129 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2020-09-04 17:44:34,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 17:44:34,129 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2020-09-04 17:44:34,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-04 17:44:34,131 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:34,131 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] [2020-09-04 17:44:34,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:44:34,132 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:34,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:34,132 INFO L82 PathProgramCache]: Analyzing trace with hash 626494907, now seen corresponding path program 1 times [2020-09-04 17:44:34,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:34,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728591662] [2020-09-04 17:44:34,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:34,135 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:34,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:34,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:44:34,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:34,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:44:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:34,278 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 17:44:34,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728591662] [2020-09-04 17:44:34,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:44:34,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 17:44:34,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490403712] [2020-09-04 17:44:34,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 17:44:34,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:44:34,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 17:44:34,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:44:34,282 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand 5 states. [2020-09-04 17:44:34,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:44:34,525 INFO L93 Difference]: Finished difference Result 130 states and 139 transitions. [2020-09-04 17:44:34,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 17:44:34,526 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-09-04 17:44:34,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:44:34,528 INFO L225 Difference]: With dead ends: 130 [2020-09-04 17:44:34,528 INFO L226 Difference]: Without dead ends: 93 [2020-09-04 17:44:34,530 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 [2020-09-04 17:44:34,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-04 17:44:34,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 69. [2020-09-04 17:44:34,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-04 17:44:34,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2020-09-04 17:44:34,548 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 36 [2020-09-04 17:44:34,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:44:34,548 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2020-09-04 17:44:34,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 17:44:34,548 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2020-09-04 17:44:34,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-04 17:44:34,551 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:34,551 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, 1] [2020-09-04 17:44:34,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:44:34,551 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:34,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:34,552 INFO L82 PathProgramCache]: Analyzing trace with hash 290043744, now seen corresponding path program 1 times [2020-09-04 17:44:34,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:34,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263931955] [2020-09-04 17:44:34,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:34,581 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:34,626 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-04 17:44:34,626 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 17:44:34,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 17:44:34,654 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-04 17:44:34,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 05:44:34 BoogieIcfgContainer [2020-09-04 17:44:34,655 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 17:44:34,659 INFO L168 Benchmark]: Toolchain (without parser) took 2349.74 ms. Allocated memory was 146.8 MB in the beginning and 234.9 MB in the end (delta: 88.1 MB). Free memory was 102.7 MB in the beginning and 189.5 MB in the end (delta: -86.8 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:34,660 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 146.8 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 17:44:34,661 INFO L168 Benchmark]: CACSL2BoogieTranslator took 409.13 ms. Allocated memory is still 146.8 MB. Free memory was 102.5 MB in the beginning and 91.4 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:34,662 INFO L168 Benchmark]: Boogie Preprocessor took 138.54 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 91.4 MB in the beginning and 181.3 MB in the end (delta: -89.8 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:34,663 INFO L168 Benchmark]: RCFGBuilder took 423.56 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 160.4 MB in the end (delta: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:34,664 INFO L168 Benchmark]: TraceAbstraction took 1371.39 ms. Allocated memory was 203.9 MB in the beginning and 234.9 MB in the end (delta: 30.9 MB). Free memory was 159.8 MB in the beginning and 189.5 MB in the end (delta: -29.8 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:34,668 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 146.8 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 409.13 ms. Allocated memory is still 146.8 MB. Free memory was 102.5 MB in the beginning and 91.4 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 138.54 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 91.4 MB in the beginning and 181.3 MB in the end (delta: -89.8 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 423.56 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 160.4 MB in the end (delta: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1371.39 ms. Allocated memory was 203.9 MB in the beginning and 234.9 MB in the end (delta: 30.9 MB). Free memory was 159.8 MB in the beginning and 189.5 MB in the end (delta: -29.8 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] long long *a = malloc(sizeof(long long)*N); [L29] sum[0] = 0 [L30] i=0 [L30] COND TRUE i