/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/indp2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 18:04:15,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 18:04:15,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 18:04:15,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 18:04:15,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 18:04:15,460 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 18:04:15,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 18:04:15,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 18:04:15,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 18:04:15,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 18:04:15,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 18:04:15,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 18:04:15,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 18:04:15,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 18:04:15,470 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 18:04:15,471 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 18:04:15,472 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 18:04:15,473 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 18:04:15,474 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 18:04:15,476 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 18:04:15,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 18:04:15,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 18:04:15,479 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 18:04:15,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 18:04:15,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 18:04:15,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 18:04:15,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 18:04:15,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 18:04:15,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 18:04:15,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 18:04:15,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 18:04:15,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 18:04:15,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 18:04:15,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 18:04:15,489 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 18:04:15,489 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 18:04:15,490 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 18:04:15,491 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 18:04:15,491 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 18:04:15,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 18:04:15,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 18:04:15,494 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 18:04:15,510 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 18:04:15,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 18:04:15,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 18:04:15,512 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 18:04:15,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 18:04:15,512 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 18:04:15,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 18:04:15,512 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 18:04:15,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 18:04:15,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 18:04:15,514 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 18:04:15,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 18:04:15,514 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 18:04:15,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 18:04:15,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 18:04:15,515 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 18:04:15,515 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 18:04:15,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 18:04:15,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 18:04:15,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 18:04:15,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 18:04:15,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 18:04:15,517 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-07-17 18:04:15,809 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 18:04:15,822 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 18:04:15,825 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 18:04:15,826 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 18:04:15,827 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 18:04:15,827 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp2f.c [2020-07-17 18:04:15,885 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01cf85749/4d6715d2668142e081697d41cae1de2c/FLAGc61efb1b4 [2020-07-17 18:04:16,266 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 18:04:16,266 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/indp2f.c [2020-07-17 18:04:16,273 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01cf85749/4d6715d2668142e081697d41cae1de2c/FLAGc61efb1b4 [2020-07-17 18:04:16,638 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01cf85749/4d6715d2668142e081697d41cae1de2c [2020-07-17 18:04:16,646 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 18:04:16,649 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 18:04:16,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 18:04:16,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 18:04:16,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 18:04:16,657 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 06:04:16" (1/1) ... [2020-07-17 18:04:16,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e5acf82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:16, skipping insertion in model container [2020-07-17 18:04:16,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 06:04:16" (1/1) ... [2020-07-17 18:04:16,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 18:04:16,690 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 18:04:16,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 18:04:16,934 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 18:04:16,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 18:04:16,971 INFO L208 MainTranslator]: Completed translation [2020-07-17 18:04:16,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:16 WrapperNode [2020-07-17 18:04:16,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 18:04:16,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 18:04:16,972 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 18:04:16,972 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 18:04:17,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:16" (1/1) ... [2020-07-17 18:04:17,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:16" (1/1) ... [2020-07-17 18:04:17,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:16" (1/1) ... [2020-07-17 18:04:17,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:16" (1/1) ... [2020-07-17 18:04:17,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:16" (1/1) ... [2020-07-17 18:04:17,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:16" (1/1) ... [2020-07-17 18:04:17,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:16" (1/1) ... [2020-07-17 18:04:17,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 18:04:17,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 18:04:17,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 18:04:17,100 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 18:04:17,101 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 18:04:17,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 18:04:17,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 18:04:17,160 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-17 18:04:17,160 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 18:04:17,161 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 18:04:17,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 18:04:17,161 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 18:04:17,161 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-17 18:04:17,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 18:04:17,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 18:04:17,162 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 18:04:17,162 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 18:04:17,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 18:04:17,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 18:04:17,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 18:04:17,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 18:04:17,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 18:04:17,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 18:04:17,451 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 18:04:17,451 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-17 18:04:17,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 06:04:17 BoogieIcfgContainer [2020-07-17 18:04:17,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 18:04:17,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 18:04:17,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 18:04:17,469 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 18:04:17,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 06:04:16" (1/3) ... [2020-07-17 18:04:17,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@493acf91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 06:04:17, skipping insertion in model container [2020-07-17 18:04:17,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:04:16" (2/3) ... [2020-07-17 18:04:17,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@493acf91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 06:04:17, skipping insertion in model container [2020-07-17 18:04:17,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 06:04:17" (3/3) ... [2020-07-17 18:04:17,472 INFO L109 eAbstractionObserver]: Analyzing ICFG indp2f.c [2020-07-17 18:04:17,483 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 18:04:17,504 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 18:04:17,526 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 18:04:17,546 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 18:04:17,546 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 18:04:17,546 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-17 18:04:17,547 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 18:04:17,547 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 18:04:17,547 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 18:04:17,547 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 18:04:17,547 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 18:04:17,564 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2020-07-17 18:04:17,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-17 18:04:17,575 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:04:17,576 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] [2020-07-17 18:04:17,579 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:04:17,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:04:17,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1846170158, now seen corresponding path program 1 times [2020-07-17 18:04:17,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:04:17,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696272692] [2020-07-17 18:04:17,593 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:04:17,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:04:17,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:04:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:04:17,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 18:04:17,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696272692] [2020-07-17 18:04:17,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 18:04:17,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 18:04:17,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237635138] [2020-07-17 18:04:17,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 18:04:17,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:04:17,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 18:04:17,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 18:04:17,833 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 3 states. [2020-07-17 18:04:18,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:04:18,044 INFO L93 Difference]: Finished difference Result 109 states and 128 transitions. [2020-07-17 18:04:18,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 18:04:18,046 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-07-17 18:04:18,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:04:18,056 INFO L225 Difference]: With dead ends: 109 [2020-07-17 18:04:18,056 INFO L226 Difference]: Without dead ends: 56 [2020-07-17 18:04:18,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 18:04:18,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-07-17 18:04:18,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-07-17 18:04:18,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-17 18:04:18,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2020-07-17 18:04:18,110 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 33 [2020-07-17 18:04:18,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:04:18,111 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2020-07-17 18:04:18,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 18:04:18,111 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2020-07-17 18:04:18,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-17 18:04:18,113 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:04:18,113 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] [2020-07-17 18:04:18,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 18:04:18,114 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:04:18,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:04:18,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1457656721, now seen corresponding path program 1 times [2020-07-17 18:04:18,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:04:18,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733355339] [2020-07-17 18:04:18,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:04:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:04:18,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:04:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:04:18,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 18:04:18,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733355339] [2020-07-17 18:04:18,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 18:04:18,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 18:04:18,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355473885] [2020-07-17 18:04:18,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 18:04:18,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:04:18,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 18:04:18,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-17 18:04:18,328 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 5 states. [2020-07-17 18:04:18,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:04:18,606 INFO L93 Difference]: Finished difference Result 108 states and 117 transitions. [2020-07-17 18:04:18,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 18:04:18,607 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-07-17 18:04:18,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:04:18,611 INFO L225 Difference]: With dead ends: 108 [2020-07-17 18:04:18,611 INFO L226 Difference]: Without dead ends: 78 [2020-07-17 18:04:18,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-17 18:04:18,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-07-17 18:04:18,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 59. [2020-07-17 18:04:18,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-17 18:04:18,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2020-07-17 18:04:18,633 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 33 [2020-07-17 18:04:18,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:04:18,633 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2020-07-17 18:04:18,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 18:04:18,634 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2020-07-17 18:04:18,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-17 18:04:18,635 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:04:18,636 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] [2020-07-17 18:04:18,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 18:04:18,636 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:04:18,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:04:18,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1203755678, now seen corresponding path program 1 times [2020-07-17 18:04:18,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:04:18,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069753165] [2020-07-17 18:04:18,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:04:18,655 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-17 18:04:18,656 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-07-17 18:04:18,656 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 18:04:18,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 18:04:18,693 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-07-17 18:04:18,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 06:04:18 BoogieIcfgContainer [2020-07-17 18:04:18,694 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 18:04:18,697 INFO L168 Benchmark]: Toolchain (without parser) took 2048.21 ms. Allocated memory was 144.2 MB in the beginning and 232.8 MB in the end (delta: 88.6 MB). Free memory was 102.5 MB in the beginning and 203.5 MB in the end (delta: -101.0 MB). Peak memory consumption was 80.2 MB. Max. memory is 7.1 GB. [2020-07-17 18:04:18,698 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 144.2 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-17 18:04:18,699 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.95 ms. Allocated memory is still 144.2 MB. Free memory was 102.1 MB in the beginning and 91.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-17 18:04:18,700 INFO L168 Benchmark]: Boogie Preprocessor took 127.36 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 91.8 MB in the beginning and 179.4 MB in the end (delta: -87.6 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-17 18:04:18,701 INFO L168 Benchmark]: RCFGBuilder took 357.09 ms. Allocated memory is still 201.3 MB. Free memory was 179.4 MB in the beginning and 160.3 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2020-07-17 18:04:18,702 INFO L168 Benchmark]: TraceAbstraction took 1228.81 ms. Allocated memory was 201.3 MB in the beginning and 232.8 MB in the end (delta: 31.5 MB). Free memory was 159.6 MB in the beginning and 203.5 MB in the end (delta: -43.9 MB). Peak memory consumption was 80.1 MB. Max. memory is 7.1 GB. [2020-07-17 18:04:18,706 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 144.2 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 321.95 ms. Allocated memory is still 144.2 MB. Free memory was 102.1 MB in the beginning and 91.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.36 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 91.8 MB in the beginning and 179.4 MB in the end (delta: -87.6 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 357.09 ms. Allocated memory is still 201.3 MB. Free memory was 179.4 MB in the beginning and 160.3 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1228.81 ms. Allocated memory was 201.3 MB in the beginning and 232.8 MB in the end (delta: 31.5 MB). Free memory was 159.6 MB in the beginning and 203.5 MB in the end (delta: -43.9 MB). Peak memory consumption was 80.1 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); [L28] i=0 [L28] COND TRUE i