/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/s2liff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:44:12,322 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:44:12,326 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:44:12,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:44:12,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:44:12,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:44:12,356 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:44:12,358 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:44:12,360 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:44:12,361 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:44:12,362 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:44:12,363 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:44:12,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:44:12,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:44:12,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:44:12,368 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:44:12,369 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:44:12,370 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:44:12,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:44:12,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:44:12,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:44:12,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:44:12,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:44:12,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:44:12,382 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 17:44:12,392 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:44:12,393 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:44:12,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:44:12,395 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 17:44:12,408 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:44:12,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:44:12,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:44:12,410 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:44:12,410 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:44:12,410 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:44:12,410 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:44:12,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:44:12,411 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:44:12,411 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:44:12,411 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:44:12,411 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:44:12,411 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:44:12,412 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:44:12,412 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:44:12,412 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:44:12,412 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:44:12,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:44:12,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:44:12,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:44:12,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:44:12,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:44:12,413 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:44:12,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:44:12,949 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:44:12,954 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:44:12,956 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:44:12,956 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:44:12,958 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s2liff.c [2020-09-04 17:44:13,038 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/944af0d7f/b698cc5be73f4f70844531cdb959ad21/FLAG8de0ca140 [2020-09-04 17:44:13,623 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:44:13,625 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s2liff.c [2020-09-04 17:44:13,636 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/944af0d7f/b698cc5be73f4f70844531cdb959ad21/FLAG8de0ca140 [2020-09-04 17:44:13,977 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/944af0d7f/b698cc5be73f4f70844531cdb959ad21 [2020-09-04 17:44:13,993 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:44:13,995 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:44:13,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:44:13,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:44:14,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:44:14,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:44:13" (1/1) ... [2020-09-04 17:44:14,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aa107a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:14, skipping insertion in model container [2020-09-04 17:44:14,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:44:13" (1/1) ... [2020-09-04 17:44:14,017 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:44:14,045 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:44:14,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:44:14,356 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:44:14,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:44:14,486 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:44:14,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:14 WrapperNode [2020-09-04 17:44:14,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:44:14,488 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:44:14,488 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:44:14,489 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:44:14,507 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:14" (1/1) ... [2020-09-04 17:44:14,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:14" (1/1) ... [2020-09-04 17:44:14,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:14" (1/1) ... [2020-09-04 17:44:14,519 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:14" (1/1) ... [2020-09-04 17:44:14,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:14" (1/1) ... [2020-09-04 17:44:14,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:14" (1/1) ... [2020-09-04 17:44:14,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:14" (1/1) ... [2020-09-04 17:44:14,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:44:14,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:44:14,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:44:14,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:44:14,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:44:14,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:44:14,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:44:14,636 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 17:44:14,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 17:44:14,636 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:44:14,636 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:44:14,637 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 17:44:14,637 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 17:44:14,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 17:44:14,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 17:44:14,637 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 17:44:14,638 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:44:14,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 17:44:14,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 17:44:14,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 17:44:14,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 17:44:14,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 17:44:14,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:44:14,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:44:15,007 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:44:15,007 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-04 17:44:15,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:44:15 BoogieIcfgContainer [2020-09-04 17:44:15,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:44:15,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:44:15,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:44:15,020 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:44:15,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:44:13" (1/3) ... [2020-09-04 17:44:15,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@696c8e8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:44:15, skipping insertion in model container [2020-09-04 17:44:15,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:14" (2/3) ... [2020-09-04 17:44:15,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@696c8e8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:44:15, skipping insertion in model container [2020-09-04 17:44:15,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:44:15" (3/3) ... [2020-09-04 17:44:15,025 INFO L109 eAbstractionObserver]: Analyzing ICFG s2liff.c [2020-09-04 17:44:15,037 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:44:15,047 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:44:15,069 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:44:15,095 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:44:15,096 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:44:15,096 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:44:15,096 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:44:15,096 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:44:15,096 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:44:15,096 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:44:15,097 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:44:15,118 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2020-09-04 17:44:15,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-04 17:44:15,133 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:15,134 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 17:44:15,135 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:15,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:15,142 INFO L82 PathProgramCache]: Analyzing trace with hash -2050446892, now seen corresponding path program 1 times [2020-09-04 17:44:15,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:15,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030906376] [2020-09-04 17:44:15,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:15,232 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:15,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:44:15,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:15,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:44:15,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:15,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:44:15,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030906376] [2020-09-04 17:44:15,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:44:15,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 17:44:15,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283858450] [2020-09-04 17:44:15,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 17:44:15,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:44:15,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 17:44:15,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 17:44:15,505 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 3 states. [2020-09-04 17:44:15,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:44:15,767 INFO L93 Difference]: Finished difference Result 125 states and 142 transitions. [2020-09-04 17:44:15,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 17:44:15,770 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-09-04 17:44:15,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:44:15,783 INFO L225 Difference]: With dead ends: 125 [2020-09-04 17:44:15,783 INFO L226 Difference]: Without dead ends: 59 [2020-09-04 17:44:15,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 17:44:15,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-04 17:44:15,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-09-04 17:44:15,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-04 17:44:15,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2020-09-04 17:44:15,855 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 33 [2020-09-04 17:44:15,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:44:15,856 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2020-09-04 17:44:15,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 17:44:15,857 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2020-09-04 17:44:15,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-04 17:44:15,858 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:15,859 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:44:15,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:44:15,859 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:15,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:15,860 INFO L82 PathProgramCache]: Analyzing trace with hash -341126016, now seen corresponding path program 1 times [2020-09-04 17:44:15,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:15,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671607938] [2020-09-04 17:44:15,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:15,864 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:15,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:15,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:44:16,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:16,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:44:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:16,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:44:16,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671607938] [2020-09-04 17:44:16,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:44:16,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 17:44:16,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770809228] [2020-09-04 17:44:16,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 17:44:16,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:44:16,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 17:44:16,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:44:16,029 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand 5 states. [2020-09-04 17:44:16,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:44:16,286 INFO L93 Difference]: Finished difference Result 115 states and 124 transitions. [2020-09-04 17:44:16,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 17:44:16,288 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-09-04 17:44:16,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:44:16,290 INFO L225 Difference]: With dead ends: 115 [2020-09-04 17:44:16,290 INFO L226 Difference]: Without dead ends: 84 [2020-09-04 17:44:16,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-04 17:44:16,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-09-04 17:44:16,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 62. [2020-09-04 17:44:16,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-04 17:44:16,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2020-09-04 17:44:16,342 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 33 [2020-09-04 17:44:16,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:44:16,342 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2020-09-04 17:44:16,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 17:44:16,343 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2020-09-04 17:44:16,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-04 17:44:16,346 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:16,347 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:44:16,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:44:16,349 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:16,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:16,349 INFO L82 PathProgramCache]: Analyzing trace with hash 746418975, now seen corresponding path program 1 times [2020-09-04 17:44:16,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:16,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619454732] [2020-09-04 17:44:16,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:16,384 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:16,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 17:44:16,442 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 17:44:16,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 17:44:16,518 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 17:44:16,562 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 17:44:16,562 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 17:44:16,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 17:44:16,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 05:44:16 BoogieIcfgContainer [2020-09-04 17:44:16,587 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 17:44:16,591 INFO L168 Benchmark]: Toolchain (without parser) took 2594.85 ms. Allocated memory was 137.9 MB in the beginning and 231.7 MB in the end (delta: 93.8 MB). Free memory was 101.8 MB in the beginning and 191.2 MB in the end (delta: -89.4 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:16,592 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 137.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 17:44:16,593 INFO L168 Benchmark]: CACSL2BoogieTranslator took 491.27 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 101.5 MB in the beginning and 179.6 MB in the end (delta: -78.1 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:16,594 INFO L168 Benchmark]: Boogie Preprocessor took 61.23 ms. Allocated memory is still 200.8 MB. Free memory was 179.6 MB in the beginning and 177.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:16,595 INFO L168 Benchmark]: RCFGBuilder took 461.49 ms. Allocated memory is still 200.8 MB. Free memory was 177.2 MB in the beginning and 156.8 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:16,596 INFO L168 Benchmark]: TraceAbstraction took 1571.66 ms. Allocated memory was 200.8 MB in the beginning and 231.7 MB in the end (delta: 30.9 MB). Free memory was 156.8 MB in the beginning and 191.2 MB in the end (delta: -34.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 17:44:16,600 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 137.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 491.27 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 101.5 MB in the beginning and 179.6 MB in the end (delta: -78.1 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 61.23 ms. Allocated memory is still 200.8 MB. Free memory was 179.6 MB in the beginning and 177.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 461.49 ms. Allocated memory is still 200.8 MB. Free memory was 177.2 MB in the beginning and 156.8 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1571.66 ms. Allocated memory was 200.8 MB in the beginning and 231.7 MB in the end (delta: 30.9 MB). Free memory was 156.8 MB in the beginning and 191.2 MB in the end (delta: -34.4 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; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = N [L30] i=0 [L30] COND TRUE i