/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 0.2.0-b8ad66e [2020-10-24 02:24:02,449 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 02:24:02,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 02:24:02,504 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 02:24:02,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 02:24:02,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 02:24:02,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 02:24:02,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 02:24:02,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 02:24:02,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 02:24:02,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 02:24:02,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 02:24:02,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 02:24:02,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 02:24:02,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 02:24:02,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 02:24:02,570 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 02:24:02,582 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 02:24:02,605 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 02:24:02,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 02:24:02,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 02:24:02,620 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 02:24:02,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 02:24:02,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 02:24:02,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 02:24:02,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 02:24:02,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 02:24:02,621 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 02:24:02,622 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 02:24:02,622 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 02:24:02,623 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 02:24:02,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 02:24:02,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 02:24:02,623 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 02:24:02,624 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 02:24:02,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 02:24:02,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 02:24:02,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 02:24:02,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 02:24:02,625 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 02:24:02,625 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 02:24:03,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 02:24:03,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 02:24:03,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 02:24:03,084 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 02:24:03,084 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 02:24:03,085 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s5iff.c [2020-10-24 02:24:03,172 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/253386126/09da045d74f1473b9026343ddd59e40f/FLAG49de7154f [2020-10-24 02:24:03,722 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 02:24:03,723 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s5iff.c [2020-10-24 02:24:03,731 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/253386126/09da045d74f1473b9026343ddd59e40f/FLAG49de7154f [2020-10-24 02:24:04,079 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/253386126/09da045d74f1473b9026343ddd59e40f [2020-10-24 02:24:04,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 02:24:04,088 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 02:24:04,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 02:24:04,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 02:24:04,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 02:24:04,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:24:04" (1/1) ... [2020-10-24 02:24:04,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b91e48b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:04, skipping insertion in model container [2020-10-24 02:24:04,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:24:04" (1/1) ... [2020-10-24 02:24:04,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 02:24:04,123 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 02:24:04,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:24:04,307 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 02:24:04,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:24:04,355 INFO L208 MainTranslator]: Completed translation [2020-10-24 02:24:04,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:04 WrapperNode [2020-10-24 02:24:04,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 02:24:04,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 02:24:04,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 02:24:04,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 02:24:04,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:04" (1/1) ... [2020-10-24 02:24:04,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:04" (1/1) ... [2020-10-24 02:24:04,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:04" (1/1) ... [2020-10-24 02:24:04,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:04" (1/1) ... [2020-10-24 02:24:04,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:04" (1/1) ... [2020-10-24 02:24:04,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:04" (1/1) ... [2020-10-24 02:24:04,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:04" (1/1) ... [2020-10-24 02:24:04,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 02:24:04,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 02:24:04,403 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 02:24:04,403 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 02:24:04,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:04" (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 [2020-10-24 02:24:04,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 02:24:04,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 02:24:04,495 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 02:24:04,495 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-24 02:24:04,496 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-24 02:24:04,496 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 02:24:04,496 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 02:24:04,496 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 02:24:04,497 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 02:24:04,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 02:24:04,497 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-24 02:24:04,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-24 02:24:04,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-24 02:24:04,498 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-24 02:24:04,498 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 02:24:04,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-24 02:24:04,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 02:24:04,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 02:24:04,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 02:24:04,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 02:24:04,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 02:24:04,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 02:24:05,089 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 02:24:05,090 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-24 02:24:05,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:24:05 BoogieIcfgContainer [2020-10-24 02:24:05,092 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 02:24:05,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 02:24:05,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 02:24:05,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 02:24:05,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:24:04" (1/3) ... [2020-10-24 02:24:05,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a094329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:24:05, skipping insertion in model container [2020-10-24 02:24:05,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:04" (2/3) ... [2020-10-24 02:24:05,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a094329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:24:05, skipping insertion in model container [2020-10-24 02:24:05,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:24:05" (3/3) ... [2020-10-24 02:24:05,101 INFO L111 eAbstractionObserver]: Analyzing ICFG s5iff.c [2020-10-24 02:24:05,113 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 02:24:05,119 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 02:24:05,134 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 02:24:05,158 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 02:24:05,159 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 02:24:05,159 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 02:24:05,159 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 02:24:05,159 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 02:24:05,159 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 02:24:05,159 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 02:24:05,160 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 02:24:05,175 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-10-24 02:24:05,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-24 02:24:05,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:24:05,191 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] [2020-10-24 02:24:05,191 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:24:05,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:24:05,198 INFO L82 PathProgramCache]: Analyzing trace with hash -109308390, now seen corresponding path program 1 times [2020-10-24 02:24:05,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:24:05,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374709782] [2020-10-24 02:24:05,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:24:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:24:05,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:24:05,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:24:05,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-24 02:24:05,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:24:05,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:24:05,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374709782] [2020-10-24 02:24:05,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:24:05,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-24 02:24:05,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536560966] [2020-10-24 02:24:05,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-24 02:24:05,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:24:05,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-24 02:24:05,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-24 02:24:05,602 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 5 states. [2020-10-24 02:24:06,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:24:06,071 INFO L93 Difference]: Finished difference Result 148 states and 166 transitions. [2020-10-24 02:24:06,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 02:24:06,073 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-10-24 02:24:06,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:24:06,085 INFO L225 Difference]: With dead ends: 148 [2020-10-24 02:24:06,085 INFO L226 Difference]: Without dead ends: 80 [2020-10-24 02:24:06,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-24 02:24:06,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-24 02:24:06,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 61. [2020-10-24 02:24:06,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-24 02:24:06,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2020-10-24 02:24:06,164 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 37 [2020-10-24 02:24:06,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:24:06,164 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2020-10-24 02:24:06,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-24 02:24:06,165 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2020-10-24 02:24:06,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-24 02:24:06,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:24:06,167 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:24:06,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 02:24:06,168 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:24:06,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:24:06,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1788289630, now seen corresponding path program 1 times [2020-10-24 02:24:06,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:24:06,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054364362] [2020-10-24 02:24:06,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:24:06,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 02:24:06,228 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 02:24:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 02:24:06,281 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 02:24:06,350 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-24 02:24:06,350 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 02:24:06,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 02:24:06,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:24:06 BoogieIcfgContainer [2020-10-24 02:24:06,424 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 02:24:06,427 INFO L168 Benchmark]: Toolchain (without parser) took 2342.14 ms. Allocated memory is still 151.0 MB. Free memory was 127.3 MB in the beginning and 102.9 MB in the end (delta: 24.4 MB). Peak memory consumption was 26.6 MB. Max. memory is 8.0 GB. [2020-10-24 02:24:06,428 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 125.8 MB. Free memory was 103.1 MB in the beginning and 103.0 MB in the end (delta: 66.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 02:24:06,429 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.24 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 116.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-24 02:24:06,431 INFO L168 Benchmark]: Boogie Preprocessor took 43.69 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 114.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-24 02:24:06,432 INFO L168 Benchmark]: RCFGBuilder took 689.63 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 128.4 MB in the end (delta: -13.8 MB). Peak memory consumption was 17.4 MB. Max. memory is 8.0 GB. [2020-10-24 02:24:06,433 INFO L168 Benchmark]: TraceAbstraction took 1330.69 ms. Allocated memory is still 151.0 MB. Free memory was 128.0 MB in the beginning and 102.9 MB in the end (delta: 25.1 MB). Peak memory consumption was 26.0 MB. Max. memory is 8.0 GB. [2020-10-24 02:24:06,438 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 125.8 MB. Free memory was 103.1 MB in the beginning and 103.0 MB in the end (delta: 66.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 267.24 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 116.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.69 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 114.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 689.63 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 128.4 MB in the end (delta: -13.8 MB). Peak memory consumption was 17.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1330.69 ms. Allocated memory is still 151.0 MB. Free memory was 128.0 MB in the beginning and 102.9 MB in the end (delta: 25.1 MB). Peak memory consumption was 26.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; VAL [\old(N)=51, N=0] [L23] N = __VERIFIER_nondet_int() VAL [\old(N)=0, __VERIFIER_nondet_int()=1, N=1] [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L27] int i; VAL [\old(N)=0, N=1] [L28] long long sum[1]; VAL [\old(N)=0, N=1, sum={3:0}] [L29] int *a = malloc(sizeof(int)*N); VAL [\old(N)=0, a={-1:0}, malloc(sizeof(int)*N)={-1:0}, N=1, sum={3:0}] [L31] sum[0] = 1 VAL [\old(N)=0, a={-1:0}, malloc(sizeof(int)*N)={-1:0}, N=1, sum={3:0}] [L32] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={3:0}] [L32] COND TRUE i