/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/ss1f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:44:26,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:44:26,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:44:26,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:44:26,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:44:26,934 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:44:26,936 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:44:26,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:44:26,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:44:26,940 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:44:26,941 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:44:26,942 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:44:26,942 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:44:26,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:44:26,945 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:44:26,946 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:44:26,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:44:26,948 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:44:26,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:44:26,951 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:44:26,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:44:26,954 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:44:26,956 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:44:26,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:44:26,959 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 17:44:26,959 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 17:44:26,960 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 17:44:26,961 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 17:44:26,961 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 17:44:26,962 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 17:44:26,962 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 17:44:26,963 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 17:44:26,964 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 17:44:26,965 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 17:44:26,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 17:44:26,966 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 17:44:26,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 17:44:26,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 17:44:26,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:44:26,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:44:26,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:44:26,971 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 17:44:26,982 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:44:26,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:44:26,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:44:26,984 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:44:26,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:44:26,984 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:44:26,985 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:44:26,985 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:44:26,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:44:26,985 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:44:26,986 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:44:26,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:44:26,986 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:44:26,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:44:26,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:44:26,987 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:44:26,987 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:44:26,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:44:26,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:44:26,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:44:26,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:44:26,988 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:44:26,988 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:44:27,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:44:27,469 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:44:27,473 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:44:27,475 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:44:27,476 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:44:27,477 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss1f.c [2020-09-04 17:44:27,581 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3687e10a/ce39c59685104b92b1eb7becedf22302/FLAGad54cd705 [2020-09-04 17:44:28,152 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:44:28,153 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ss1f.c [2020-09-04 17:44:28,161 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3687e10a/ce39c59685104b92b1eb7becedf22302/FLAGad54cd705 [2020-09-04 17:44:28,503 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3687e10a/ce39c59685104b92b1eb7becedf22302 [2020-09-04 17:44:28,518 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:44:28,520 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:44:28,521 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:44:28,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:44:28,526 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:44:28,527 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:44:28" (1/1) ... [2020-09-04 17:44:28,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4650f40f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:28, skipping insertion in model container [2020-09-04 17:44:28,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:44:28" (1/1) ... [2020-09-04 17:44:28,541 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:44:28,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:44:28,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:44:28,934 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:44:28,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:44:29,086 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:44:29,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:29 WrapperNode [2020-09-04 17:44:29,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:44:29,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:44:29,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:44:29,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:44:29,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:29" (1/1) ... [2020-09-04 17:44:29,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:29" (1/1) ... [2020-09-04 17:44:29,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:29" (1/1) ... [2020-09-04 17:44:29,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:29" (1/1) ... [2020-09-04 17:44:29,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:29" (1/1) ... [2020-09-04 17:44:29,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:29" (1/1) ... [2020-09-04 17:44:29,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:29" (1/1) ... [2020-09-04 17:44:29,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:44:29,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:44:29,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:44:29,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:44:29,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:29" (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 17:44:29,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:44:29,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:44:29,240 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 17:44:29,240 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 17:44:29,240 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:44:29,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:44:29,240 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 17:44:29,241 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 17:44:29,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 17:44:29,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 17:44:29,241 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 17:44:29,241 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:44:29,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 17:44:29,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 17:44:29,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 17:44:29,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 17:44:29,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 17:44:29,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:44:29,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:44:29,602 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:44:29,603 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-04 17:44:29,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:44:29 BoogieIcfgContainer [2020-09-04 17:44:29,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:44:29,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:44:29,624 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:44:29,631 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:44:29,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:44:28" (1/3) ... [2020-09-04 17:44:29,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@752b8657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:44:29, skipping insertion in model container [2020-09-04 17:44:29,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:29" (2/3) ... [2020-09-04 17:44:29,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@752b8657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:44:29, skipping insertion in model container [2020-09-04 17:44:29,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:44:29" (3/3) ... [2020-09-04 17:44:29,641 INFO L109 eAbstractionObserver]: Analyzing ICFG ss1f.c [2020-09-04 17:44:29,652 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:44:29,661 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:44:29,683 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:44:29,711 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:44:29,711 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:44:29,712 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:44:29,712 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:44:29,712 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:44:29,712 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:44:29,712 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:44:29,713 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:44:29,732 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-09-04 17:44:29,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-04 17:44:29,747 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:29,748 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 17:44:29,749 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:29,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:29,755 INFO L82 PathProgramCache]: Analyzing trace with hash 441507982, now seen corresponding path program 1 times [2020-09-04 17:44:29,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:29,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604139853] [2020-09-04 17:44:29,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:29,848 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:29,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:30,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:44:30,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:30,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:44:30,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:30,090 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 17:44:30,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604139853] [2020-09-04 17:44:30,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:44:30,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 17:44:30,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307675266] [2020-09-04 17:44:30,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 17:44:30,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:44:30,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 17:44:30,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 17:44:30,121 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-09-04 17:44:30,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:44:30,329 INFO L93 Difference]: Finished difference Result 135 states and 154 transitions. [2020-09-04 17:44:30,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 17:44:30,332 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-09-04 17:44:30,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:44:30,344 INFO L225 Difference]: With dead ends: 135 [2020-09-04 17:44:30,344 INFO L226 Difference]: Without dead ends: 64 [2020-09-04 17:44:30,350 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 17:44:30,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-04 17:44:30,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-09-04 17:44:30,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-04 17:44:30,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2020-09-04 17:44:30,410 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 35 [2020-09-04 17:44:30,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:44:30,411 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2020-09-04 17:44:30,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 17:44:30,411 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2020-09-04 17:44:30,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-04 17:44:30,413 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:30,413 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 17:44:30,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:44:30,415 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:30,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:30,416 INFO L82 PathProgramCache]: Analyzing trace with hash 280562238, now seen corresponding path program 1 times [2020-09-04 17:44:30,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:30,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832489412] [2020-09-04 17:44:30,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:30,420 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:30,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:30,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:44:30,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:30,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:44:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:30,565 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 17:44:30,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832489412] [2020-09-04 17:44:30,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:44:30,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 17:44:30,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68827779] [2020-09-04 17:44:30,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 17:44:30,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:44:30,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 17:44:30,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:44:30,569 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand 5 states. [2020-09-04 17:44:30,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:44:30,832 INFO L93 Difference]: Finished difference Result 128 states and 137 transitions. [2020-09-04 17:44:30,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 17:44:30,833 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-09-04 17:44:30,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:44:30,835 INFO L225 Difference]: With dead ends: 128 [2020-09-04 17:44:30,835 INFO L226 Difference]: Without dead ends: 92 [2020-09-04 17:44:30,838 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 17:44:30,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-04 17:44:30,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 68. [2020-09-04 17:44:30,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-04 17:44:30,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions. [2020-09-04 17:44:30,855 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 35 [2020-09-04 17:44:30,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:44:30,856 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 71 transitions. [2020-09-04 17:44:30,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 17:44:30,856 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 71 transitions. [2020-09-04 17:44:30,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-04 17:44:30,859 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:30,859 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] [2020-09-04 17:44:30,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:44:30,860 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:30,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:30,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1152052174, now seen corresponding path program 1 times [2020-09-04 17:44:30,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:30,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095346445] [2020-09-04 17:44:30,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:30,897 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:30,936 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-04 17:44:30,937 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 17:44:30,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 17:44:30,966 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-04 17:44:30,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 05:44:30 BoogieIcfgContainer [2020-09-04 17:44:30,966 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 17:44:30,971 INFO L168 Benchmark]: Toolchain (without parser) took 2449.47 ms. Allocated memory was 139.5 MB in the beginning and 236.5 MB in the end (delta: 97.0 MB). Free memory was 102.5 MB in the beginning and 192.1 MB in the end (delta: -89.6 MB). Peak memory consumption was 7.4 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:30,972 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.6 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-09-04 17:44:30,973 INFO L168 Benchmark]: CACSL2BoogieTranslator took 567.51 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 102.5 MB in the beginning and 181.0 MB in the end (delta: -78.5 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:30,974 INFO L168 Benchmark]: Boogie Preprocessor took 78.90 ms. Allocated memory is still 202.4 MB. Free memory was 181.0 MB in the beginning and 178.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:30,975 INFO L168 Benchmark]: RCFGBuilder took 441.29 ms. Allocated memory is still 202.4 MB. Free memory was 178.4 MB in the beginning and 157.4 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:30,976 INFO L168 Benchmark]: TraceAbstraction took 1343.10 ms. Allocated memory was 202.4 MB in the beginning and 236.5 MB in the end (delta: 34.1 MB). Free memory was 157.4 MB in the beginning and 192.1 MB in the end (delta: -34.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 17:44:30,986 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.6 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 567.51 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 102.5 MB in the beginning and 181.0 MB in the end (delta: -78.5 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 78.90 ms. Allocated memory is still 202.4 MB. Free memory was 181.0 MB in the beginning and 178.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 441.29 ms. Allocated memory is still 202.4 MB. Free memory was 178.4 MB in the beginning and 157.4 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1343.10 ms. Allocated memory was 202.4 MB in the beginning and 236.5 MB in the end (delta: 34.1 MB). Free memory was 157.4 MB in the beginning and 192.1 MB in the end (delta: -34.7 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