/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/ms2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:43:54,027 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:43:54,032 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:43:54,075 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:43:54,075 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:43:54,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:43:54,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:43:54,089 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:43:54,092 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:43:54,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:43:54,096 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:43:54,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:43:54,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:43:54,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:43:54,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:43:54,104 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:43:54,106 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:43:54,107 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:43:54,108 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:43:54,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:43:54,118 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:43:54,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:43:54,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:43:54,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:43:54,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 17:43:54,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 17:43:54,140 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 17:43:54,141 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 17:43:54,141 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 17:43:54,142 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 17:43:54,143 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 17:43:54,145 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 17:43:54,146 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 17:43:54,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 17:43:54,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 17:43:54,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 17:43:54,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 17:43:54,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 17:43:54,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:43:54,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:43:54,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:43:54,154 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 17:43:54,171 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:43:54,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:43:54,174 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:43:54,174 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:43:54,174 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:43:54,175 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:43:54,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:43:54,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:43:54,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:43:54,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:43:54,176 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:43:54,177 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:43:54,177 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:43:54,177 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:43:54,178 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:43:54,178 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:43:54,178 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:43:54,178 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:43:54,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:43:54,179 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:43:54,179 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:43:54,179 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:43:54,179 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:43:54,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:43:54,628 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:43:54,632 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:43:54,636 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:43:54,636 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:43:54,638 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ms2f.c [2020-09-04 17:43:54,726 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d58b7a9f/28325ddd13c8425984d0097182de341f/FLAG79cf5da60 [2020-09-04 17:43:55,242 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:43:55,242 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ms2f.c [2020-09-04 17:43:55,251 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d58b7a9f/28325ddd13c8425984d0097182de341f/FLAG79cf5da60 [2020-09-04 17:43:55,584 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d58b7a9f/28325ddd13c8425984d0097182de341f [2020-09-04 17:43:55,602 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:43:55,604 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:43:55,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:43:55,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:43:55,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:43:55,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:43:55" (1/1) ... [2020-09-04 17:43:55,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347c51ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:55, skipping insertion in model container [2020-09-04 17:43:55,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:43:55" (1/1) ... [2020-09-04 17:43:55,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:43:55,650 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:43:55,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:43:55,872 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:43:55,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:43:55,910 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:43:55,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:55 WrapperNode [2020-09-04 17:43:55,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:43:55,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:43:55,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:43:55,911 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:43:56,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:55" (1/1) ... [2020-09-04 17:43:56,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:55" (1/1) ... [2020-09-04 17:43:56,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:55" (1/1) ... [2020-09-04 17:43:56,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:55" (1/1) ... [2020-09-04 17:43:56,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:55" (1/1) ... [2020-09-04 17:43:56,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:55" (1/1) ... [2020-09-04 17:43:56,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:55" (1/1) ... [2020-09-04 17:43:56,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:43:56,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:43:56,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:43:56,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:43:56,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:55" (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 17:43:56,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:43:56,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:43:56,119 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 17:43:56,119 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 17:43:56,119 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:43:56,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:43:56,119 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 17:43:56,120 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 17:43:56,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 17:43:56,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 17:43:56,120 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 17:43:56,121 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:43:56,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 17:43:56,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 17:43:56,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 17:43:56,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 17:43:56,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 17:43:56,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:43:56,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:43:56,413 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:43:56,414 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-04 17:43:56,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:43:56 BoogieIcfgContainer [2020-09-04 17:43:56,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:43:56,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:43:56,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:43:56,425 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:43:56,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:43:55" (1/3) ... [2020-09-04 17:43:56,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@976f823 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:43:56, skipping insertion in model container [2020-09-04 17:43:56,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:55" (2/3) ... [2020-09-04 17:43:56,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@976f823 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:43:56, skipping insertion in model container [2020-09-04 17:43:56,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:43:56" (3/3) ... [2020-09-04 17:43:56,430 INFO L109 eAbstractionObserver]: Analyzing ICFG ms2f.c [2020-09-04 17:43:56,444 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:43:56,454 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:43:56,478 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:43:56,507 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:43:56,508 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:43:56,508 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:43:56,508 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:43:56,508 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:43:56,508 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:43:56,509 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:43:56,509 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:43:56,530 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2020-09-04 17:43:56,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-04 17:43:56,543 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:43:56,545 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] [2020-09-04 17:43:56,545 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:43:56,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:43:56,552 INFO L82 PathProgramCache]: Analyzing trace with hash -845632023, now seen corresponding path program 1 times [2020-09-04 17:43:56,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:43:56,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070009285] [2020-09-04 17:43:56,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:43:56,630 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:43:56,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:56,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:43:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:56,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:43:56,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:56,810 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 17:43:56,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070009285] [2020-09-04 17:43:56,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:43:56,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 17:43:56,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444721710] [2020-09-04 17:43:56,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 17:43:56,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:43:56,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 17:43:56,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 17:43:56,847 INFO L87 Difference]: Start difference. First operand 57 states. Second operand 3 states. [2020-09-04 17:43:57,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:43:57,014 INFO L93 Difference]: Finished difference Result 97 states and 110 transitions. [2020-09-04 17:43:57,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 17:43:57,016 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-09-04 17:43:57,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:43:57,027 INFO L225 Difference]: With dead ends: 97 [2020-09-04 17:43:57,027 INFO L226 Difference]: Without dead ends: 45 [2020-09-04 17:43:57,032 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 17:43:57,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-04 17:43:57,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-04 17:43:57,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-04 17:43:57,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2020-09-04 17:43:57,090 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 30 [2020-09-04 17:43:57,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:43:57,090 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2020-09-04 17:43:57,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 17:43:57,091 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2020-09-04 17:43:57,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-04 17:43:57,092 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:43:57,093 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] [2020-09-04 17:43:57,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:43:57,093 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:43:57,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:43:57,094 INFO L82 PathProgramCache]: Analyzing trace with hash 104990277, now seen corresponding path program 1 times [2020-09-04 17:43:57,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:43:57,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764970547] [2020-09-04 17:43:57,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:43:57,100 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:43:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:57,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:43:57,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:57,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:43:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:57,235 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 17:43:57,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764970547] [2020-09-04 17:43:57,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:43:57,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 17:43:57,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471931555] [2020-09-04 17:43:57,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 17:43:57,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:43:57,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 17:43:57,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:43:57,238 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 5 states. [2020-09-04 17:43:57,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:43:57,402 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2020-09-04 17:43:57,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 17:43:57,403 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-04 17:43:57,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:43:57,405 INFO L225 Difference]: With dead ends: 71 [2020-09-04 17:43:57,405 INFO L226 Difference]: Without dead ends: 53 [2020-09-04 17:43:57,407 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 17:43:57,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-04 17:43:57,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 48. [2020-09-04 17:43:57,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-04 17:43:57,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2020-09-04 17:43:57,422 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 30 [2020-09-04 17:43:57,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:43:57,423 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2020-09-04 17:43:57,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 17:43:57,423 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2020-09-04 17:43:57,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-04 17:43:57,425 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:43:57,425 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] [2020-09-04 17:43:57,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:43:57,425 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:43:57,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:43:57,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1687643347, now seen corresponding path program 1 times [2020-09-04 17:43:57,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:43:57,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436919301] [2020-09-04 17:43:57,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:43:57,459 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:43:57,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 17:43:57,501 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 17:43:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 17:43:57,538 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 17:43:57,589 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 17:43:57,589 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 17:43:57,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 17:43:57,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 05:43:57 BoogieIcfgContainer [2020-09-04 17:43:57,610 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 17:43:57,614 INFO L168 Benchmark]: Toolchain (without parser) took 2009.04 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 102.8 MB in the beginning and 91.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 74.9 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:57,615 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 17:43:57,616 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.34 ms. Allocated memory is still 138.9 MB. Free memory was 102.6 MB in the beginning and 92.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:57,617 INFO L168 Benchmark]: Boogie Preprocessor took 125.92 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 92.2 MB in the beginning and 180.1 MB in the end (delta: -88.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:57,618 INFO L168 Benchmark]: RCFGBuilder took 382.97 ms. Allocated memory is still 202.9 MB. Free memory was 180.1 MB in the beginning and 162.3 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:57,619 INFO L168 Benchmark]: TraceAbstraction took 1188.91 ms. Allocated memory is still 202.9 MB. Free memory was 161.6 MB in the beginning and 91.9 MB in the end (delta: 69.7 MB). Peak memory consumption was 69.7 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:57,624 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 303.34 ms. Allocated memory is still 138.9 MB. Free memory was 102.6 MB in the beginning and 92.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.92 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 92.2 MB in the beginning and 180.1 MB in the end (delta: -88.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 382.97 ms. Allocated memory is still 202.9 MB. Free memory was 180.1 MB in the beginning and 162.3 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1188.91 ms. Allocated memory is still 202.9 MB. Free memory was 161.6 MB in the beginning and 91.9 MB in the end (delta: 69.7 MB). Peak memory consumption was 69.7 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] int sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] i=0 [L29] COND TRUE i N) [L13] COND TRUE !(cond) [L13] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 57 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 97 SDtfs, 53 SDslu, 33 SDs, 0 SdLazy, 113 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...