/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/ms4f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:43:58,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:43:58,030 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:43:58,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:43:58,084 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:43:58,095 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:43:58,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:43:58,100 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:43:58,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:43:58,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:43:58,106 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:43:58,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:43:58,108 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:43:58,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:43:58,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:43:58,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:43:58,117 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:43:58,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:43:58,121 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:43:58,126 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:43:58,131 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:43:58,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:43:58,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:43:58,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:43:58,142 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 17:43:58,143 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 17:43:58,143 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 17:43:58,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 17:43:58,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 17:43:58,148 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 17:43:58,148 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 17:43:58,149 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 17:43:58,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 17:43:58,151 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 17:43:58,152 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 17:43:58,152 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 17:43:58,153 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 17:43:58,154 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 17:43:58,154 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:43:58,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:43:58,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:43:58,158 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 17:43:58,184 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:43:58,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:43:58,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:43:58,188 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:43:58,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:43:58,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:43:58,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:43:58,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:43:58,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:43:58,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:43:58,190 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:43:58,190 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:43:58,191 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:43:58,191 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:43:58,191 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:43:58,192 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:43:58,192 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:43:58,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:43:58,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:43:58,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:43:58,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:43:58,193 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:43:58,193 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:43:58,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:43:58,666 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:43:58,672 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:43:58,676 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:43:58,677 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:43:58,678 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ms4f.c [2020-09-04 17:43:58,773 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c41df20c/3b83a895b0dc4173ba03c968dfb16cdb/FLAG3c2b34429 [2020-09-04 17:43:59,271 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:43:59,272 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ms4f.c [2020-09-04 17:43:59,283 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c41df20c/3b83a895b0dc4173ba03c968dfb16cdb/FLAG3c2b34429 [2020-09-04 17:43:59,606 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c41df20c/3b83a895b0dc4173ba03c968dfb16cdb [2020-09-04 17:43:59,621 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:43:59,623 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:43:59,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:43:59,624 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:43:59,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:43:59,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:43:59" (1/1) ... [2020-09-04 17:43:59,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@629af9c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:59, skipping insertion in model container [2020-09-04 17:43:59,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:43:59" (1/1) ... [2020-09-04 17:43:59,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:43:59,672 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:43:59,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:43:59,941 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:43:59,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:43:59,991 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:43:59,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:59 WrapperNode [2020-09-04 17:43:59,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:43:59,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:43:59,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:43:59,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:44:00,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:59" (1/1) ... [2020-09-04 17:44:00,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:59" (1/1) ... [2020-09-04 17:44:00,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:59" (1/1) ... [2020-09-04 17:44:00,112 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:59" (1/1) ... [2020-09-04 17:44:00,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:59" (1/1) ... [2020-09-04 17:44:00,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:59" (1/1) ... [2020-09-04 17:44:00,159 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:59" (1/1) ... [2020-09-04 17:44:00,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:44:00,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:44:00,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:44:00,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:44:00,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:59" (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 17:44:00,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:44:00,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:44:00,268 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 17:44:00,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 17:44:00,268 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:44:00,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:44:00,269 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 17:44:00,269 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 17:44:00,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 17:44:00,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 17:44:00,269 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 17:44:00,269 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:44:00,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 17:44:00,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 17:44:00,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 17:44:00,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 17:44:00,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 17:44:00,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:44:00,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:44:00,659 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:44:00,660 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-04 17:44:00,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:44:00 BoogieIcfgContainer [2020-09-04 17:44:00,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:44:00,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:44:00,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:44:00,671 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:44:00,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:43:59" (1/3) ... [2020-09-04 17:44:00,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29c8d348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:44:00, skipping insertion in model container [2020-09-04 17:44:00,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:59" (2/3) ... [2020-09-04 17:44:00,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29c8d348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:44:00, skipping insertion in model container [2020-09-04 17:44:00,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:44:00" (3/3) ... [2020-09-04 17:44:00,676 INFO L109 eAbstractionObserver]: Analyzing ICFG ms4f.c [2020-09-04 17:44:00,689 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:44:00,700 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:44:00,722 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:44:00,751 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:44:00,751 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:44:00,752 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:44:00,752 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:44:00,752 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:44:00,752 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:44:00,752 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:44:00,752 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:44:00,769 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2020-09-04 17:44:00,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-04 17:44:00,783 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:00,785 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 17:44:00,785 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:00,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:00,792 INFO L82 PathProgramCache]: Analyzing trace with hash -845632023, now seen corresponding path program 1 times [2020-09-04 17:44:00,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:00,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103210395] [2020-09-04 17:44:00,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:00,887 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:00,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:01,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:44:01,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:01,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:44:01,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:01,090 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 17:44:01,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103210395] [2020-09-04 17:44:01,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:44:01,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 17:44:01,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252148007] [2020-09-04 17:44:01,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 17:44:01,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:44:01,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 17:44:01,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 17:44:01,124 INFO L87 Difference]: Start difference. First operand 57 states. Second operand 3 states. [2020-09-04 17:44:01,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:44:01,304 INFO L93 Difference]: Finished difference Result 97 states and 110 transitions. [2020-09-04 17:44:01,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 17:44:01,306 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-09-04 17:44:01,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:44:01,319 INFO L225 Difference]: With dead ends: 97 [2020-09-04 17:44:01,320 INFO L226 Difference]: Without dead ends: 45 [2020-09-04 17:44:01,325 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 17:44:01,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-04 17:44:01,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-04 17:44:01,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-04 17:44:01,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2020-09-04 17:44:01,389 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 30 [2020-09-04 17:44:01,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:44:01,390 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2020-09-04 17:44:01,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 17:44:01,390 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2020-09-04 17:44:01,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-04 17:44:01,392 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:01,392 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 17:44:01,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:44:01,393 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:01,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:01,394 INFO L82 PathProgramCache]: Analyzing trace with hash 104990277, now seen corresponding path program 1 times [2020-09-04 17:44:01,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:01,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635830832] [2020-09-04 17:44:01,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:01,398 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:01,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:01,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:44:01,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:01,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:44:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:01,540 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 17:44:01,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635830832] [2020-09-04 17:44:01,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:44:01,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 17:44:01,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341162883] [2020-09-04 17:44:01,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 17:44:01,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:44:01,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 17:44:01,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:44:01,544 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 5 states. [2020-09-04 17:44:01,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:44:01,714 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2020-09-04 17:44:01,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 17:44:01,714 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-04 17:44:01,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:44:01,716 INFO L225 Difference]: With dead ends: 71 [2020-09-04 17:44:01,717 INFO L226 Difference]: Without dead ends: 53 [2020-09-04 17:44:01,719 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 17:44:01,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-04 17:44:01,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 48. [2020-09-04 17:44:01,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-04 17:44:01,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2020-09-04 17:44:01,734 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 30 [2020-09-04 17:44:01,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:44:01,735 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2020-09-04 17:44:01,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 17:44:01,736 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2020-09-04 17:44:01,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-04 17:44:01,737 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:01,737 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 17:44:01,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:44:01,738 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:01,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:01,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1687643347, now seen corresponding path program 1 times [2020-09-04 17:44:01,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:01,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626426185] [2020-09-04 17:44:01,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:01,776 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:01,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 17:44:01,819 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 17:44:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 17:44:01,873 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 17:44:01,935 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 17:44:01,936 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 17:44:01,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 17:44:01,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 05:44:01 BoogieIcfgContainer [2020-09-04 17:44:01,987 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 17:44:01,994 INFO L168 Benchmark]: Toolchain (without parser) took 2366.92 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.1 MB in the beginning and 92.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 72.7 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:01,995 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 120.1 MB in the beginning and 119.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 17:44:01,996 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.77 ms. Allocated memory is still 140.5 MB. Free memory was 101.9 MB in the beginning and 91.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:01,997 INFO L168 Benchmark]: Boogie Preprocessor took 170.48 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 91.5 MB in the beginning and 180.7 MB in the end (delta: -89.2 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:01,998 INFO L168 Benchmark]: RCFGBuilder took 501.43 ms. Allocated memory is still 203.4 MB. Free memory was 180.7 MB in the beginning and 162.4 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:02,000 INFO L168 Benchmark]: TraceAbstraction took 1320.16 ms. Allocated memory is still 203.4 MB. Free memory was 162.4 MB in the beginning and 92.3 MB in the end (delta: 70.2 MB). Peak memory consumption was 70.2 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:02,004 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 120.1 MB in the beginning and 119.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 368.77 ms. Allocated memory is still 140.5 MB. Free memory was 101.9 MB in the beginning and 91.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 170.48 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 91.5 MB in the beginning and 180.7 MB in the end (delta: -89.2 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 501.43 ms. Allocated memory is still 203.4 MB. Free memory was 180.7 MB in the beginning and 162.4 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1320.16 ms. Allocated memory is still 203.4 MB. Free memory was 162.4 MB in the beginning and 92.3 MB in the end (delta: 70.2 MB). Peak memory consumption was 70.2 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 sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] i=0 [L29] COND TRUE i 3*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: 1.1s, 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...