/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/s5iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 23:09:58,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 23:09:58,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 23:09:58,467 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 23:09:58,467 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 23:09:58,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 23:09:58,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 23:09:58,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 23:09:58,486 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 23:09:58,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 23:09:58,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 23:09:58,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 23:09:58,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 23:09:58,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 23:09:58,496 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 23:09:58,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 23:09:58,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 23:09:58,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 23:09:58,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 23:09:58,511 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 23:09:58,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 23:09:58,518 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 23:09:58,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 23:09:58,520 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 23:09:58,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 23:09:58,528 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 23:09:58,528 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 23:09:58,532 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 23:09:58,532 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 23:09:58,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 23:09:58,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 23:09:58,536 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 23:09:58,537 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 23:09:58,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 23:09:58,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 23:09:58,539 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 23:09:58,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 23:09:58,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 23:09:58,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 23:09:58,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 23:09:58,543 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 23:09:58,545 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 23:09:58,566 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 23:09:58,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 23:09:58,569 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 23:09:58,569 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 23:09:58,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 23:09:58,569 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 23:09:58,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 23:09:58,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 23:09:58,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 23:09:58,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 23:09:58,571 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 23:09:58,572 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 23:09:58,572 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 23:09:58,572 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 23:09:58,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 23:09:58,573 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 23:09:58,573 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 23:09:58,573 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 23:09:58,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 23:09:58,574 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 23:09:58,574 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 23:09:58,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 23:09:58,574 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 23:09:59,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 23:09:59,035 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 23:09:59,040 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 23:09:59,042 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 23:09:59,043 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 23:09:59,044 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s5iff.c [2020-09-04 23:09:59,129 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e8ae30e75/5d78b1dddc5a4e4ab82f96b16fea27ca/FLAG92293aea3 [2020-09-04 23:09:59,700 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 23:09:59,701 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s5iff.c [2020-09-04 23:09:59,710 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e8ae30e75/5d78b1dddc5a4e4ab82f96b16fea27ca/FLAG92293aea3 [2020-09-04 23:10:00,045 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e8ae30e75/5d78b1dddc5a4e4ab82f96b16fea27ca [2020-09-04 23:10:00,057 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 23:10:00,059 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 23:10:00,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 23:10:00,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 23:10:00,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 23:10:00,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:10:00" (1/1) ... [2020-09-04 23:10:00,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47211fe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:00, skipping insertion in model container [2020-09-04 23:10:00,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:10:00" (1/1) ... [2020-09-04 23:10:00,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 23:10:00,100 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 23:10:00,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:10:00,359 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 23:10:00,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:10:00,405 INFO L208 MainTranslator]: Completed translation [2020-09-04 23:10:00,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:00 WrapperNode [2020-09-04 23:10:00,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 23:10:00,407 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 23:10:00,407 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 23:10:00,407 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 23:10:00,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:00" (1/1) ... [2020-09-04 23:10:00,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:00" (1/1) ... [2020-09-04 23:10:00,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:00" (1/1) ... [2020-09-04 23:10:00,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:00" (1/1) ... [2020-09-04 23:10:00,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:00" (1/1) ... [2020-09-04 23:10:00,526 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:00" (1/1) ... [2020-09-04 23:10:00,528 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:00" (1/1) ... [2020-09-04 23:10:00,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 23:10:00,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 23:10:00,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 23:10:00,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 23:10:00,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:00" (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 23:10:00,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 23:10:00,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 23:10:00,606 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 23:10:00,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 23:10:00,606 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 23:10:00,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 23:10:00,606 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 23:10:00,607 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 23:10:00,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 23:10:00,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 23:10:00,607 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 23:10:00,607 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 23:10:00,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 23:10:00,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 23:10:00,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 23:10:00,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 23:10:00,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 23:10:00,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 23:10:00,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 23:10:00,957 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 23:10:00,957 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-04 23:10:00,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:10:00 BoogieIcfgContainer [2020-09-04 23:10:00,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 23:10:00,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 23:10:00,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 23:10:00,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 23:10:00,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 11:10:00" (1/3) ... [2020-09-04 23:10:00,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5419764c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:10:00, skipping insertion in model container [2020-09-04 23:10:00,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:00" (2/3) ... [2020-09-04 23:10:00,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5419764c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:10:00, skipping insertion in model container [2020-09-04 23:10:00,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:10:00" (3/3) ... [2020-09-04 23:10:00,979 INFO L109 eAbstractionObserver]: Analyzing ICFG s5iff.c [2020-09-04 23:10:00,989 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 23:10:00,998 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 23:10:01,020 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 23:10:01,049 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 23:10:01,050 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 23:10:01,050 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 23:10:01,050 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 23:10:01,050 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 23:10:01,050 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 23:10:01,051 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 23:10:01,051 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 23:10:01,071 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-09-04 23:10:01,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-04 23:10:01,084 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:10:01,085 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] [2020-09-04 23:10:01,085 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:10:01,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:10:01,092 INFO L82 PathProgramCache]: Analyzing trace with hash 171473808, now seen corresponding path program 1 times [2020-09-04 23:10:01,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:10:01,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140243787] [2020-09-04 23:10:01,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:10:01,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:01,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:10:01,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:01,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 23:10:01,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:01,349 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 23:10:01,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140243787] [2020-09-04 23:10:01,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:10:01,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 23:10:01,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744068001] [2020-09-04 23:10:01,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 23:10:01,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:10:01,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 23:10:01,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 23:10:01,385 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2020-09-04 23:10:01,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:10:01,573 INFO L93 Difference]: Finished difference Result 113 states and 126 transitions. [2020-09-04 23:10:01,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 23:10:01,575 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-09-04 23:10:01,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:10:01,587 INFO L225 Difference]: With dead ends: 113 [2020-09-04 23:10:01,587 INFO L226 Difference]: Without dead ends: 53 [2020-09-04 23:10:01,592 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 23:10:01,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-04 23:10:01,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-04 23:10:01,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-04 23:10:01,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-09-04 23:10:01,647 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 31 [2020-09-04 23:10:01,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:10:01,648 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-09-04 23:10:01,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 23:10:01,649 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-09-04 23:10:01,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-04 23:10:01,650 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:10:01,651 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] [2020-09-04 23:10:01,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 23:10:01,651 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:10:01,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:10:01,652 INFO L82 PathProgramCache]: Analyzing trace with hash 921692051, now seen corresponding path program 1 times [2020-09-04 23:10:01,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:10:01,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281701907] [2020-09-04 23:10:01,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:10:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:01,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:10:01,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:01,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 23:10:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:10:01,811 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 23:10:01,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281701907] [2020-09-04 23:10:01,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:10:01,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 23:10:01,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679434673] [2020-09-04 23:10:01,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 23:10:01,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:10:01,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 23:10:01,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 23:10:01,817 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 5 states. [2020-09-04 23:10:02,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:10:02,016 INFO L93 Difference]: Finished difference Result 99 states and 105 transitions. [2020-09-04 23:10:02,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 23:10:02,017 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-09-04 23:10:02,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:10:02,019 INFO L225 Difference]: With dead ends: 99 [2020-09-04 23:10:02,019 INFO L226 Difference]: Without dead ends: 74 [2020-09-04 23:10:02,021 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 23:10:02,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-04 23:10:02,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 55. [2020-09-04 23:10:02,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-04 23:10:02,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2020-09-04 23:10:02,037 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 31 [2020-09-04 23:10:02,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:10:02,038 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2020-09-04 23:10:02,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 23:10:02,038 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2020-09-04 23:10:02,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-04 23:10:02,040 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:10:02,040 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] [2020-09-04 23:10:02,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 23:10:02,041 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:10:02,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:10:02,042 INFO L82 PathProgramCache]: Analyzing trace with hash -827220298, now seen corresponding path program 1 times [2020-09-04 23:10:02,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:10:02,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142598480] [2020-09-04 23:10:02,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:10:02,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 23:10:02,102 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 23:10:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 23:10:02,181 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 23:10:02,233 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 23:10:02,233 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 23:10:02,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 23:10:02,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 11:10:02 BoogieIcfgContainer [2020-09-04 23:10:02,306 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 23:10:02,310 INFO L168 Benchmark]: Toolchain (without parser) took 2249.04 ms. Allocated memory was 140.5 MB in the beginning and 233.8 MB in the end (delta: 93.3 MB). Free memory was 104.9 MB in the beginning and 198.3 MB in the end (delta: -93.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 23:10:02,311 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 23:10:02,312 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.37 ms. Allocated memory is still 140.5 MB. Free memory was 104.7 MB in the beginning and 94.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-04 23:10:02,313 INFO L168 Benchmark]: Boogie Preprocessor took 123.91 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 94.2 MB in the beginning and 181.3 MB in the end (delta: -87.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-09-04 23:10:02,314 INFO L168 Benchmark]: RCFGBuilder took 435.34 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 161.9 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. [2020-09-04 23:10:02,315 INFO L168 Benchmark]: TraceAbstraction took 1338.54 ms. Allocated memory was 203.9 MB in the beginning and 233.8 MB in the end (delta: 29.9 MB). Free memory was 161.9 MB in the beginning and 198.3 MB in the end (delta: -36.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 23:10:02,319 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 346.37 ms. Allocated memory is still 140.5 MB. Free memory was 104.7 MB in the beginning and 94.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.91 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 94.2 MB in the beginning and 181.3 MB in the end (delta: -87.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 435.34 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 161.9 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1338.54 ms. Allocated memory was 203.9 MB in the beginning and 233.8 MB in the end (delta: 29.9 MB). Free memory was 161.9 MB in the beginning and 198.3 MB in the end (delta: -36.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; VAL [\old(N)=10, N=0] [L21] N = __VERIFIER_nondet_int() VAL [\old(N)=0, __VERIFIER_nondet_int()=1, N=1] [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L25] int i; VAL [\old(N)=0, N=1] [L26] long long sum[1]; VAL [\old(N)=0, N=1, sum={2:0}] [L27] int *a = malloc(sizeof(int)*N); VAL [\old(N)=0, a={-1:0}, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}] [L29] sum[0] = 1 VAL [\old(N)=0, a={-1:0}, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}] [L30] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}] [L30] COND TRUE i