/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/eqn2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:57:47,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:57:47,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:57:47,413 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:57:47,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:57:47,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:57:47,417 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:57:47,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:57:47,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:57:47,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:57:47,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:57:47,436 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:57:47,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:57:47,438 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:57:47,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:57:47,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:57:47,442 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:57:47,443 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:57:47,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:57:47,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:57:47,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:57:47,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:57:47,454 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:57:47,455 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:57:47,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 13:57:47,456 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 13:57:47,456 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 13:57:47,462 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 13:57:47,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 13:57:47,464 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 13:57:47,464 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 13:57:47,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 13:57:47,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 13:57:47,466 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 13:57:47,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 13:57:47,468 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 13:57:47,468 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 13:57:47,468 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 13:57:47,469 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:57:47,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:57:47,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:57:47,472 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:57:47,499 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:57:47,499 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:57:47,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:57:47,501 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:57:47,501 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:57:47,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:57:47,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:57:47,504 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:57:47,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:57:47,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:57:47,506 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:57:47,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:57:47,507 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:57:47,507 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:57:47,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:57:47,507 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:57:47,507 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:57:47,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:57:47,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:57:47,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:57:47,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:57:47,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:57:47,508 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:57:47,780 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:57:47,797 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:57:47,801 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:57:47,803 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:57:47,803 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:57:47,804 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/eqn2f.c [2020-07-07 13:57:47,875 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af4761e34/1a4d660d805046c785f9c7d17f33928d/FLAG15d928464 [2020-07-07 13:57:48,339 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:57:48,340 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/eqn2f.c [2020-07-07 13:57:48,346 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af4761e34/1a4d660d805046c785f9c7d17f33928d/FLAG15d928464 [2020-07-07 13:57:48,707 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af4761e34/1a4d660d805046c785f9c7d17f33928d [2020-07-07 13:57:48,716 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:57:48,718 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:57:48,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:57:48,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:57:48,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:57:48,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:57:48" (1/1) ... [2020-07-07 13:57:48,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4461ebf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:57:48, skipping insertion in model container [2020-07-07 13:57:48,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:57:48" (1/1) ... [2020-07-07 13:57:48,736 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:57:48,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:57:48,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:57:48,931 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:57:48,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:57:48,969 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:57:48,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:57:48 WrapperNode [2020-07-07 13:57:48,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:57:48,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:57:48,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:57:48,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:57:49,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:57:48" (1/1) ... [2020-07-07 13:57:49,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:57:48" (1/1) ... [2020-07-07 13:57:49,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:57:48" (1/1) ... [2020-07-07 13:57:49,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:57:48" (1/1) ... [2020-07-07 13:57:49,082 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:57:48" (1/1) ... [2020-07-07 13:57:49,088 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:57:48" (1/1) ... [2020-07-07 13:57:49,089 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:57:48" (1/1) ... [2020-07-07 13:57:49,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:57:49,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:57:49,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:57:49,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:57:49,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:57:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:57:49,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:57:49,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:57:49,150 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-07 13:57:49,150 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 13:57:49,150 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:57:49,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:57:49,151 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 13:57:49,151 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-07 13:57:49,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 13:57:49,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 13:57:49,151 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 13:57:49,151 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:57:49,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 13:57:49,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 13:57:49,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 13:57:49,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:57:49,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:57:49,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 13:57:49,453 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:57:49,453 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-07 13:57:49,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:57:49 BoogieIcfgContainer [2020-07-07 13:57:49,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:57:49,459 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:57:49,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:57:49,463 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:57:49,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:57:48" (1/3) ... [2020-07-07 13:57:49,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b3ae875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:57:49, skipping insertion in model container [2020-07-07 13:57:49,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:57:48" (2/3) ... [2020-07-07 13:57:49,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b3ae875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:57:49, skipping insertion in model container [2020-07-07 13:57:49,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:57:49" (3/3) ... [2020-07-07 13:57:49,466 INFO L109 eAbstractionObserver]: Analyzing ICFG eqn2f.c [2020-07-07 13:57:49,476 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:57:49,483 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:57:49,496 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:57:49,516 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:57:49,516 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:57:49,516 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:57:49,516 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:57:49,516 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:57:49,516 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:57:49,517 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:57:49,517 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:57:49,533 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2020-07-07 13:57:49,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-07 13:57:49,543 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:57:49,544 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] [2020-07-07 13:57:49,544 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:57:49,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:57:49,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1558850377, now seen corresponding path program 1 times [2020-07-07 13:57:49,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:57:49,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662391270] [2020-07-07 13:57:49,556 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:57:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:57:49,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:57:49,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:57:49,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:57:49,845 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:57:49,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662391270] [2020-07-07 13:57:49,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:57:49,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:57:49,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105577094] [2020-07-07 13:57:49,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:57:49,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:57:49,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:57:49,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:57:49,877 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 3 states. [2020-07-07 13:57:50,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:57:50,025 INFO L93 Difference]: Finished difference Result 109 states and 124 transitions. [2020-07-07 13:57:50,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:57:50,027 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-07-07 13:57:50,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:57:50,037 INFO L225 Difference]: With dead ends: 109 [2020-07-07 13:57:50,037 INFO L226 Difference]: Without dead ends: 56 [2020-07-07 13:57:50,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:57:50,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-07-07 13:57:50,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-07-07 13:57:50,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-07 13:57:50,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2020-07-07 13:57:50,084 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 35 [2020-07-07 13:57:50,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:57:50,085 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2020-07-07 13:57:50,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:57:50,085 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2020-07-07 13:57:50,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-07 13:57:50,087 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:57:50,087 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] [2020-07-07 13:57:50,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:57:50,088 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:57:50,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:57:50,089 INFO L82 PathProgramCache]: Analyzing trace with hash -574468364, now seen corresponding path program 1 times [2020-07-07 13:57:50,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:57:50,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282604242] [2020-07-07 13:57:50,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:57:50,115 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:57:50,116 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 13:57:50,116 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 13:57:50,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:57:50,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 01:57:50 BoogieIcfgContainer [2020-07-07 13:57:50,139 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 13:57:50,141 INFO L168 Benchmark]: Toolchain (without parser) took 1422.60 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 104.5 MB in the beginning and 121.9 MB in the end (delta: -17.3 MB). Peak memory consumption was 47.2 MB. Max. memory is 7.1 GB. [2020-07-07 13:57:50,143 INFO L168 Benchmark]: CDTParser took 0.79 ms. Allocated memory is still 138.9 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-07 13:57:50,144 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.72 ms. Allocated memory is still 138.9 MB. Free memory was 104.1 MB in the beginning and 93.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-07 13:57:50,145 INFO L168 Benchmark]: Boogie Preprocessor took 121.86 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 93.8 MB in the beginning and 180.9 MB in the end (delta: -87.1 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-07-07 13:57:50,146 INFO L168 Benchmark]: RCFGBuilder took 366.24 ms. Allocated memory is still 203.4 MB. Free memory was 180.9 MB in the beginning and 162.3 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2020-07-07 13:57:50,147 INFO L168 Benchmark]: TraceAbstraction took 679.31 ms. Allocated memory is still 203.4 MB. Free memory was 161.6 MB in the beginning and 121.9 MB in the end (delta: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 7.1 GB. [2020-07-07 13:57:50,151 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.79 ms. Allocated memory is still 138.9 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 250.72 ms. Allocated memory is still 138.9 MB. Free memory was 104.1 MB in the beginning and 93.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.86 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 93.8 MB in the beginning and 180.9 MB in the end (delta: -87.1 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 366.24 ms. Allocated memory is still 203.4 MB. Free memory was 180.9 MB in the beginning and 162.3 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 679.31 ms. Allocated memory is still 203.4 MB. Free memory was 161.6 MB in the beginning and 121.9 MB in the end (delta: 39.8 MB). Peak memory consumption was 39.8 MB. 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 *a = malloc(sizeof(long long)*N); [L27] long long *b = malloc(sizeof(long long)*N); [L29] a[0] = 8 [L30] b[0] = 1 [L32] i=1 [L32] COND FALSE !(i