/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/indp1f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 23:09:26,413 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 23:09:26,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 23:09:26,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 23:09:26,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 23:09:26,476 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 23:09:26,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 23:09:26,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 23:09:26,486 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 23:09:26,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 23:09:26,490 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 23:09:26,492 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 23:09:26,492 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 23:09:26,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 23:09:26,499 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 23:09:26,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 23:09:26,502 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 23:09:26,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 23:09:26,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 23:09:26,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 23:09:26,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 23:09:26,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 23:09:26,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 23:09:26,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 23:09:26,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 23:09:26,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 23:09:26,522 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 23:09:26,523 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 23:09:26,523 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 23:09:26,524 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 23:09:26,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 23:09:26,526 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 23:09:26,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 23:09:26,527 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 23:09:26,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 23:09:26,529 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 23:09:26,529 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 23:09:26,530 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 23:09:26,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 23:09:26,531 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 23:09:26,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 23:09:26,532 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 23:09:26,545 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 23:09:26,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 23:09:26,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 23:09:26,547 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 23:09:26,547 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 23:09:26,547 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 23:09:26,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 23:09:26,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 23:09:26,548 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 23:09:26,548 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 23:09:26,548 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 23:09:26,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 23:09:26,548 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 23:09:26,549 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 23:09:26,549 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 23:09:26,549 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 23:09:26,549 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 23:09:26,549 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 23:09:26,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 23:09:26,550 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 23:09:26,550 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 23:09:26,550 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 23:09:26,551 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-09-04 23:09:26,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 23:09:26,995 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 23:09:27,002 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 23:09:27,005 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 23:09:27,006 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 23:09:27,007 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp1f.c [2020-09-04 23:09:27,096 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74daf62fc/fe4654cbc9f34004aade94c8bd0a7189/FLAG25fc7071e [2020-09-04 23:09:27,615 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 23:09:27,616 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/indp1f.c [2020-09-04 23:09:27,625 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74daf62fc/fe4654cbc9f34004aade94c8bd0a7189/FLAG25fc7071e [2020-09-04 23:09:27,963 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74daf62fc/fe4654cbc9f34004aade94c8bd0a7189 [2020-09-04 23:09:27,977 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 23:09:27,980 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 23:09:27,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 23:09:27,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 23:09:27,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 23:09:27,986 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:09:27" (1/1) ... [2020-09-04 23:09:27,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@629af9c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:27, skipping insertion in model container [2020-09-04 23:09:27,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:09:27" (1/1) ... [2020-09-04 23:09:28,000 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 23:09:28,028 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 23:09:28,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:09:28,259 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 23:09:28,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:09:28,299 INFO L208 MainTranslator]: Completed translation [2020-09-04 23:09:28,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:28 WrapperNode [2020-09-04 23:09:28,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 23:09:28,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 23:09:28,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 23:09:28,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 23:09:28,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:28" (1/1) ... [2020-09-04 23:09:28,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:28" (1/1) ... [2020-09-04 23:09:28,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:28" (1/1) ... [2020-09-04 23:09:28,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:28" (1/1) ... [2020-09-04 23:09:28,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:28" (1/1) ... [2020-09-04 23:09:28,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:28" (1/1) ... [2020-09-04 23:09:28,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:28" (1/1) ... [2020-09-04 23:09:28,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 23:09:28,429 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 23:09:28,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 23:09:28,429 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 23:09:28,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 23:09:28,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 23:09:28,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 23:09:28,506 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 23:09:28,506 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 23:09:28,506 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 23:09:28,506 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 23:09:28,506 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 23:09:28,506 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 23:09:28,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 23:09:28,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 23:09:28,507 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 23:09:28,507 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 23:09:28,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 23:09:28,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 23:09:28,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 23:09:28,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 23:09:28,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 23:09:28,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 23:09:28,824 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 23:09:28,824 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-04 23:09:28,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:09:28 BoogieIcfgContainer [2020-09-04 23:09:28,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 23:09:28,832 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 23:09:28,832 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 23:09:28,836 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 23:09:28,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 11:09:27" (1/3) ... [2020-09-04 23:09:28,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c58529c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:09:28, skipping insertion in model container [2020-09-04 23:09:28,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:09:28" (2/3) ... [2020-09-04 23:09:28,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c58529c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:09:28, skipping insertion in model container [2020-09-04 23:09:28,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:09:28" (3/3) ... [2020-09-04 23:09:28,840 INFO L109 eAbstractionObserver]: Analyzing ICFG indp1f.c [2020-09-04 23:09:28,851 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 23:09:28,861 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 23:09:28,885 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 23:09:28,914 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 23:09:28,914 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 23:09:28,915 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 23:09:28,915 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 23:09:28,915 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 23:09:28,915 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 23:09:28,915 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 23:09:28,915 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 23:09:28,934 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2020-09-04 23:09:28,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-04 23:09:28,948 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:09:28,949 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] [2020-09-04 23:09:28,949 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:09:28,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:09:28,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1846170158, now seen corresponding path program 1 times [2020-09-04 23:09:28,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:09:28,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119181087] [2020-09-04 23:09:28,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:09:29,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:29,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:09:29,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:29,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 23:09:29,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:29,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:09:29,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119181087] [2020-09-04 23:09:29,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:09:29,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 23:09:29,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754101929] [2020-09-04 23:09:29,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 23:09:29,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:09:29,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 23:09:29,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 23:09:29,286 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 3 states. [2020-09-04 23:09:29,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:09:29,514 INFO L93 Difference]: Finished difference Result 109 states and 128 transitions. [2020-09-04 23:09:29,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 23:09:29,517 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-09-04 23:09:29,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:09:29,529 INFO L225 Difference]: With dead ends: 109 [2020-09-04 23:09:29,529 INFO L226 Difference]: Without dead ends: 56 [2020-09-04 23:09:29,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 23:09:29,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-04 23:09:29,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-09-04 23:09:29,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-04 23:09:29,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2020-09-04 23:09:29,593 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 33 [2020-09-04 23:09:29,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:09:29,594 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2020-09-04 23:09:29,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 23:09:29,595 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2020-09-04 23:09:29,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-04 23:09:29,596 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:09:29,597 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] [2020-09-04 23:09:29,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 23:09:29,597 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:09:29,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:09:29,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1457656721, now seen corresponding path program 1 times [2020-09-04 23:09:29,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:09:29,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277176649] [2020-09-04 23:09:29,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:09:29,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:29,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:09:29,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:29,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 23:09:29,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:29,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:09:29,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277176649] [2020-09-04 23:09:29,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:09:29,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 23:09:29,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859255805] [2020-09-04 23:09:29,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 23:09:29,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:09:29,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 23:09:29,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 23:09:29,738 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 5 states. [2020-09-04 23:09:29,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:09:29,986 INFO L93 Difference]: Finished difference Result 108 states and 117 transitions. [2020-09-04 23:09:29,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 23:09:29,987 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-09-04 23:09:29,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:09:29,991 INFO L225 Difference]: With dead ends: 108 [2020-09-04 23:09:29,992 INFO L226 Difference]: Without dead ends: 78 [2020-09-04 23:09:29,993 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 23:09:29,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-04 23:09:30,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 59. [2020-09-04 23:09:30,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-04 23:09:30,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2020-09-04 23:09:30,016 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 33 [2020-09-04 23:09:30,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:09:30,016 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2020-09-04 23:09:30,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 23:09:30,017 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2020-09-04 23:09:30,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-04 23:09:30,031 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:09:30,031 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] [2020-09-04 23:09:30,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 23:09:30,032 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:09:30,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:09:30,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1203755678, now seen corresponding path program 1 times [2020-09-04 23:09:30,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:09:30,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121162637] [2020-09-04 23:09:30,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:09:30,049 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 23:09:30,050 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-04 23:09:30,050 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 23:09:30,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 23:09:30,090 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-04 23:09:30,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 11:09:30 BoogieIcfgContainer [2020-09-04 23:09:30,093 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 23:09:30,096 INFO L168 Benchmark]: Toolchain (without parser) took 2115.93 ms. Allocated memory was 139.5 MB in the beginning and 236.5 MB in the end (delta: 97.0 MB). Free memory was 103.5 MB in the beginning and 203.8 MB in the end (delta: -100.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 23:09:30,097 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 23:09:30,098 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.07 ms. Allocated memory is still 139.5 MB. Free memory was 103.3 MB in the beginning and 93.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:30,100 INFO L168 Benchmark]: Boogie Preprocessor took 128.34 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 93.0 MB in the beginning and 181.9 MB in the end (delta: -89.0 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:30,100 INFO L168 Benchmark]: RCFGBuilder took 401.36 ms. Allocated memory is still 203.9 MB. Free memory was 181.9 MB in the beginning and 162.9 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:30,104 INFO L168 Benchmark]: TraceAbstraction took 1261.20 ms. Allocated memory was 203.9 MB in the beginning and 236.5 MB in the end (delta: 32.5 MB). Free memory was 162.3 MB in the beginning and 203.8 MB in the end (delta: -41.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 23:09:30,115 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 319.07 ms. Allocated memory is still 139.5 MB. Free memory was 103.3 MB in the beginning and 93.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.34 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 93.0 MB in the beginning and 181.9 MB in the end (delta: -89.0 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 401.36 ms. Allocated memory is still 203.9 MB. Free memory was 181.9 MB in the beginning and 162.9 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1261.20 ms. Allocated memory was 203.9 MB in the beginning and 236.5 MB in the end (delta: 32.5 MB). Free memory was 162.3 MB in the beginning and 203.8 MB in the end (delta: -41.5 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 *a = malloc(sizeof(long long)*N); [L28] i=0 [L28] COND TRUE i