/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/ms3f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 21:45:07,319 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 21:45:07,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 21:45:07,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 21:45:07,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 21:45:07,357 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 21:45:07,359 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 21:45:07,361 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 21:45:07,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 21:45:07,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 21:45:07,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 21:45:07,393 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 21:45:07,394 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 21:45:07,395 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 21:45:07,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 21:45:07,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 21:45:07,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 21:45:07,413 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 21:45:07,415 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 21:45:07,421 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 21:45:07,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 21:45:07,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 21:45:07,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 21:45:07,431 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 21:45:07,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 21:45:07,437 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 21:45:07,438 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 21:45:07,439 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 21:45:07,440 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 21:45:07,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 21:45:07,441 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 21:45:07,442 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 21:45:07,442 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 21:45:07,442 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 21:45:07,443 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 21:45:07,444 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 21:45:07,445 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 21:45:07,456 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 21:45:07,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 21:45:07,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 21:45:07,459 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 21:45:07,459 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 21:45:07,459 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 21:45:07,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 21:45:07,460 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 21:45:07,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 21:45:07,460 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 21:45:07,460 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 21:45:07,461 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 21:45:07,461 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 21:45:07,461 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 21:45:07,461 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 21:45:07,462 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 21:45:07,462 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 21:45:07,462 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 21:45:07,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 21:45:07,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 21:45:07,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 21:45:07,463 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 21:45:07,463 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 21:45:07,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 21:45:07,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 21:45:07,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 21:45:07,854 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 21:45:07,855 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 21:45:07,856 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ms3f.c [2020-10-23 21:45:07,946 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/760e114ef/4c3c6cfe29f1427cbf6dbd57d0b8aa00/FLAGb60032882 [2020-10-23 21:45:08,576 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 21:45:08,577 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ms3f.c [2020-10-23 21:45:08,586 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/760e114ef/4c3c6cfe29f1427cbf6dbd57d0b8aa00/FLAGb60032882 [2020-10-23 21:45:08,614 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/760e114ef/4c3c6cfe29f1427cbf6dbd57d0b8aa00 [2020-10-23 21:45:08,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 21:45:08,628 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 21:45:08,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 21:45:08,634 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 21:45:08,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 21:45:08,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:45:08" (1/1) ... [2020-10-23 21:45:08,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b06fb58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:08, skipping insertion in model container [2020-10-23 21:45:08,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:45:08" (1/1) ... [2020-10-23 21:45:08,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 21:45:08,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 21:45:08,880 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:45:08,895 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 21:45:08,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:45:08,964 INFO L208 MainTranslator]: Completed translation [2020-10-23 21:45:08,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:08 WrapperNode [2020-10-23 21:45:08,964 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 21:45:08,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 21:45:08,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 21:45:08,966 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 21:45:08,997 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:08" (1/1) ... [2020-10-23 21:45:08,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:08" (1/1) ... [2020-10-23 21:45:09,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:08" (1/1) ... [2020-10-23 21:45:09,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:08" (1/1) ... [2020-10-23 21:45:09,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:08" (1/1) ... [2020-10-23 21:45:09,041 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:08" (1/1) ... [2020-10-23 21:45:09,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:08" (1/1) ... [2020-10-23 21:45:09,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 21:45:09,046 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 21:45:09,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 21:45:09,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 21:45:09,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 21:45:09,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 21:45:09,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 21:45:09,137 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 21:45:09,137 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 21:45:09,138 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 21:45:09,138 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 21:45:09,138 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 21:45:09,138 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 21:45:09,138 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 21:45:09,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 21:45:09,139 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 21:45:09,139 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 21:45:09,139 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 21:45:09,140 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 21:45:09,140 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 21:45:09,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 21:45:09,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 21:45:09,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 21:45:09,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 21:45:09,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 21:45:09,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 21:45:09,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 21:45:09,720 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 21:45:09,720 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-23 21:45:09,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:45:09 BoogieIcfgContainer [2020-10-23 21:45:09,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 21:45:09,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 21:45:09,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 21:45:09,728 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 21:45:09,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:45:08" (1/3) ... [2020-10-23 21:45:09,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@273d3b49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:45:09, skipping insertion in model container [2020-10-23 21:45:09,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:08" (2/3) ... [2020-10-23 21:45:09,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@273d3b49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:45:09, skipping insertion in model container [2020-10-23 21:45:09,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:45:09" (3/3) ... [2020-10-23 21:45:09,731 INFO L111 eAbstractionObserver]: Analyzing ICFG ms3f.c [2020-10-23 21:45:09,742 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 21:45:09,748 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 21:45:09,761 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 21:45:09,785 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 21:45:09,785 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 21:45:09,785 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 21:45:09,786 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 21:45:09,786 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 21:45:09,786 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 21:45:09,786 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 21:45:09,786 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 21:45:09,802 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-10-23 21:45:09,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-23 21:45:09,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:45:09,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 21:45:09,813 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:45:09,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:45:09,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1978426860, now seen corresponding path program 1 times [2020-10-23 21:45:09,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:45:09,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87792051] [2020-10-23 21:45:09,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:45:09,899 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:45:09,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:10,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:45:10,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:10,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-23 21:45:10,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:10,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 21:45:10,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87792051] [2020-10-23 21:45:10,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:45:10,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 21:45:10,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225931447] [2020-10-23 21:45:10,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 21:45:10,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:45:10,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 21:45:10,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 21:45:10,197 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 3 states. [2020-10-23 21:45:10,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:45:10,509 INFO L93 Difference]: Finished difference Result 114 states and 128 transitions. [2020-10-23 21:45:10,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 21:45:10,512 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-10-23 21:45:10,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:45:10,520 INFO L225 Difference]: With dead ends: 114 [2020-10-23 21:45:10,520 INFO L226 Difference]: Without dead ends: 58 [2020-10-23 21:45:10,523 INFO L677 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 [2020-10-23 21:45:10,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-23 21:45:10,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-10-23 21:45:10,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-23 21:45:10,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2020-10-23 21:45:10,570 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 43 [2020-10-23 21:45:10,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:45:10,570 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2020-10-23 21:45:10,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 21:45:10,571 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2020-10-23 21:45:10,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-23 21:45:10,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:45:10,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 21:45:10,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 21:45:10,573 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:45:10,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:45:10,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1403761419, now seen corresponding path program 1 times [2020-10-23 21:45:10,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:45:10,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104731096] [2020-10-23 21:45:10,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:45:10,578 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:45:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:10,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:45:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:10,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-23 21:45:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:10,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 21:45:10,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104731096] [2020-10-23 21:45:10,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:45:10,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 21:45:10,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924947450] [2020-10-23 21:45:10,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 21:45:10,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:45:10,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 21:45:10,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 21:45:10,760 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 5 states. [2020-10-23 21:45:11,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:45:11,089 INFO L93 Difference]: Finished difference Result 85 states and 91 transitions. [2020-10-23 21:45:11,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 21:45:11,090 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-10-23 21:45:11,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:45:11,092 INFO L225 Difference]: With dead ends: 85 [2020-10-23 21:45:11,093 INFO L226 Difference]: Without dead ends: 66 [2020-10-23 21:45:11,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-23 21:45:11,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-23 21:45:11,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 61. [2020-10-23 21:45:11,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-23 21:45:11,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2020-10-23 21:45:11,110 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 43 [2020-10-23 21:45:11,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:45:11,111 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2020-10-23 21:45:11,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 21:45:11,111 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2020-10-23 21:45:11,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-23 21:45:11,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:45:11,113 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 21:45:11,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 21:45:11,114 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:45:11,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:45:11,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1589882434, now seen corresponding path program 1 times [2020-10-23 21:45:11,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:45:11,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147988918] [2020-10-23 21:45:11,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:45:11,383 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-10-23 21:45:11,547 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 21:45:11,554 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:45:11,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 21:45:11,652 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 21:45:11,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 21:45:11,689 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 21:45:11,752 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 21:45:11,756 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 21:45:11,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 21:45:11,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:45:11 BoogieIcfgContainer [2020-10-23 21:45:11,781 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 21:45:11,786 INFO L168 Benchmark]: Toolchain (without parser) took 3161.33 ms. Allocated memory is still 161.5 MB. Free memory was 117.6 MB in the beginning and 74.3 MB in the end (delta: 43.3 MB). Peak memory consumption was 44.0 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:11,789 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 161.5 MB. Free memory is still 134.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 21:45:11,792 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.26 ms. Allocated memory is still 161.5 MB. Free memory was 116.9 MB in the beginning and 106.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:11,793 INFO L168 Benchmark]: Boogie Preprocessor took 79.82 ms. Allocated memory is still 161.5 MB. Free memory was 106.8 MB in the beginning and 145.6 MB in the end (delta: -38.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:11,795 INFO L168 Benchmark]: RCFGBuilder took 675.83 ms. Allocated memory is still 161.5 MB. Free memory was 145.1 MB in the beginning and 126.2 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:11,796 INFO L168 Benchmark]: TraceAbstraction took 2057.44 ms. Allocated memory is still 161.5 MB. Free memory was 125.7 MB in the beginning and 74.8 MB in the end (delta: 50.8 MB). Peak memory consumption was 51.3 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:11,806 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 161.5 MB. Free memory is still 134.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 331.26 ms. Allocated memory is still 161.5 MB. Free memory was 116.9 MB in the beginning and 106.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 79.82 ms. Allocated memory is still 161.5 MB. Free memory was 106.8 MB in the beginning and 145.6 MB in the end (delta: -38.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 675.83 ms. Allocated memory is still 161.5 MB. Free memory was 145.1 MB in the beginning and 126.2 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2057.44 ms. Allocated memory is still 161.5 MB. Free memory was 125.7 MB in the beginning and 74.8 MB in the end (delta: 50.8 MB). Peak memory consumption was 51.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 [L31] COND TRUE i 2*N) [L15] COND TRUE !(cond) [L15] CALL reach_error() [L10] __assert_fail("0", "ms3f.c", 10, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.9s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 123 SDtfs, 62 SDslu, 37 SDs, 0 SdLazy, 135 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred 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...