/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/indp1f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 01:56:17,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 01:56:17,494 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 01:56:17,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 01:56:17,552 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 01:56:17,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 01:56:17,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 01:56:17,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 01:56:17,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 01:56:17,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 01:56:17,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 01:56:17,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 01:56:17,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 01:56:17,585 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 01:56:17,587 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 01:56:17,589 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 01:56:17,590 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 01:56:17,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 01:56:17,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 01:56:17,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 01:56:17,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 01:56:17,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 01:56:17,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 01:56:17,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 01:56:17,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 01:56:17,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 01:56:17,634 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 01:56:17,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 01:56:17,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 01:56:17,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 01:56:17,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 01:56:17,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 01:56:17,638 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 01:56:17,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 01:56:17,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 01:56:17,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 01:56:17,641 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 01:56:17,654 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 01:56:17,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 01:56:17,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 01:56:17,657 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 01:56:17,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 01:56:17,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 01:56:17,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 01:56:17,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 01:56:17,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 01:56:17,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 01:56:17,658 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 01:56:17,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 01:56:17,659 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 01:56:17,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 01:56:17,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 01:56:17,659 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 01:56:17,660 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 01:56:17,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 01:56:17,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 01:56:17,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 01:56:17,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 01:56:17,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 01:56:17,661 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 01:56:18,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 01:56:18,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 01:56:18,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 01:56:18,099 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 01:56:18,100 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 01:56:18,101 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp1f.c [2020-11-07 01:56:18,172 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5b4977a7/4cd9736392e147c1acbebb1bb3730118/FLAG18155df97 [2020-11-07 01:56:18,822 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 01:56:18,823 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/indp1f.c [2020-11-07 01:56:18,833 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5b4977a7/4cd9736392e147c1acbebb1bb3730118/FLAG18155df97 [2020-11-07 01:56:19,196 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5b4977a7/4cd9736392e147c1acbebb1bb3730118 [2020-11-07 01:56:19,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 01:56:19,206 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 01:56:19,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 01:56:19,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 01:56:19,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 01:56:19,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:56:19" (1/1) ... [2020-11-07 01:56:19,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72503245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:19, skipping insertion in model container [2020-11-07 01:56:19,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:56:19" (1/1) ... [2020-11-07 01:56:19,226 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 01:56:19,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 01:56:19,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:56:19,425 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 01:56:19,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:56:19,471 INFO L208 MainTranslator]: Completed translation [2020-11-07 01:56:19,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:19 WrapperNode [2020-11-07 01:56:19,472 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 01:56:19,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 01:56:19,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 01:56:19,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 01:56:19,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:19" (1/1) ... [2020-11-07 01:56:19,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:19" (1/1) ... [2020-11-07 01:56:19,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:19" (1/1) ... [2020-11-07 01:56:19,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:19" (1/1) ... [2020-11-07 01:56:19,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:19" (1/1) ... [2020-11-07 01:56:19,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:19" (1/1) ... [2020-11-07 01:56:19,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:19" (1/1) ... [2020-11-07 01:56:19,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 01:56:19,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 01:56:19,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 01:56:19,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 01:56:19,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:19" (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 [2020-11-07 01:56:19,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 01:56:19,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 01:56:19,603 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 01:56:19,603 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 01:56:19,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 01:56:19,603 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 01:56:19,604 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 01:56:19,604 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 01:56:19,604 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 01:56:19,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 01:56:19,605 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 01:56:19,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 01:56:19,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 01:56:19,605 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 01:56:19,605 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 01:56:19,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 01:56:19,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 01:56:19,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 01:56:19,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 01:56:19,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 01:56:19,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 01:56:19,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 01:56:20,206 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 01:56:20,207 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-07 01:56:20,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:56:20 BoogieIcfgContainer [2020-11-07 01:56:20,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 01:56:20,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 01:56:20,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 01:56:20,218 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 01:56:20,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:56:19" (1/3) ... [2020-11-07 01:56:20,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@188f3fda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:56:20, skipping insertion in model container [2020-11-07 01:56:20,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:19" (2/3) ... [2020-11-07 01:56:20,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@188f3fda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:56:20, skipping insertion in model container [2020-11-07 01:56:20,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:56:20" (3/3) ... [2020-11-07 01:56:20,223 INFO L111 eAbstractionObserver]: Analyzing ICFG indp1f.c [2020-11-07 01:56:20,240 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 01:56:20,244 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 01:56:20,258 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 01:56:20,294 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 01:56:20,294 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 01:56:20,295 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 01:56:20,295 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 01:56:20,295 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 01:56:20,295 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 01:56:20,295 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 01:56:20,296 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 01:56:20,319 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-11-07 01:56:20,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-07 01:56:20,332 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:20,333 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] [2020-11-07 01:56:20,333 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:20,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:20,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1087441824, now seen corresponding path program 1 times [2020-11-07 01:56:20,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:20,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45757205] [2020-11-07 01:56:20,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:20,454 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:20,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:20,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:56:20,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:20,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-11-07 01:56:20,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:20,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 01:56:20,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45757205] [2020-11-07 01:56:20,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:56:20,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 01:56:20,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396645674] [2020-11-07 01:56:20,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 01:56:20,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:56:20,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 01:56:20,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 01:56:20,826 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 3 states. [2020-11-07 01:56:21,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:56:21,104 INFO L93 Difference]: Finished difference Result 119 states and 139 transitions. [2020-11-07 01:56:21,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 01:56:21,106 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-11-07 01:56:21,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:56:21,116 INFO L225 Difference]: With dead ends: 119 [2020-11-07 01:56:21,116 INFO L226 Difference]: Without dead ends: 62 [2020-11-07 01:56:21,120 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 [2020-11-07 01:56:21,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-11-07 01:56:21,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-11-07 01:56:21,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-11-07 01:56:21,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2020-11-07 01:56:21,176 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 39 [2020-11-07 01:56:21,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:56:21,177 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2020-11-07 01:56:21,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 01:56:21,178 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2020-11-07 01:56:21,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-07 01:56:21,180 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:21,180 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] [2020-11-07 01:56:21,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 01:56:21,181 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:21,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:21,182 INFO L82 PathProgramCache]: Analyzing trace with hash 2019697356, now seen corresponding path program 1 times [2020-11-07 01:56:21,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:21,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [734784362] [2020-11-07 01:56:21,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:21,186 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:21,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:56:21,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:21,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-11-07 01:56:21,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:21,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 01:56:21,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [734784362] [2020-11-07 01:56:21,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:56:21,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 01:56:21,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654549238] [2020-11-07 01:56:21,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 01:56:21,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:56:21,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 01:56:21,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-07 01:56:21,396 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand 5 states. [2020-11-07 01:56:21,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:56:21,841 INFO L93 Difference]: Finished difference Result 115 states and 124 transitions. [2020-11-07 01:56:21,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 01:56:21,842 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-11-07 01:56:21,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:56:21,846 INFO L225 Difference]: With dead ends: 115 [2020-11-07 01:56:21,846 INFO L226 Difference]: Without dead ends: 84 [2020-11-07 01:56:21,848 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 [2020-11-07 01:56:21,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-11-07 01:56:21,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 65. [2020-11-07 01:56:21,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-07 01:56:21,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2020-11-07 01:56:21,868 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 39 [2020-11-07 01:56:21,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:56:21,869 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2020-11-07 01:56:21,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 01:56:21,869 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2020-11-07 01:56:21,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-11-07 01:56:21,871 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:21,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 01:56:21,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 01:56:21,872 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:21,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:21,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1397964890, now seen corresponding path program 1 times [2020-11-07 01:56:21,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:21,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3817368] [2020-11-07 01:56:21,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:21,947 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 01:56:21,949 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:21,965 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-11-07 01:56:21,966 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 01:56:21,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 01:56:21,987 WARN L253 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-11-07 01:56:21,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:56:21 BoogieIcfgContainer [2020-11-07 01:56:21,987 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 01:56:21,990 INFO L168 Benchmark]: Toolchain (without parser) took 2787.54 ms. Allocated memory is still 156.2 MB. Free memory was 133.1 MB in the beginning and 104.2 MB in the end (delta: 28.9 MB). Peak memory consumption was 29.8 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:21,991 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 156.2 MB. Free memory is still 130.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 01:56:21,992 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.01 ms. Allocated memory is still 156.2 MB. Free memory was 132.4 MB in the beginning and 122.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:21,993 INFO L168 Benchmark]: Boogie Preprocessor took 44.86 ms. Allocated memory is still 156.2 MB. Free memory was 122.3 MB in the beginning and 120.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:21,994 INFO L168 Benchmark]: RCFGBuilder took 689.29 ms. Allocated memory is still 156.2 MB. Free memory was 120.5 MB in the beginning and 136.1 MB in the end (delta: -15.6 MB). Peak memory consumption was 18.4 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:21,995 INFO L168 Benchmark]: TraceAbstraction took 1772.73 ms. Allocated memory is still 156.2 MB. Free memory was 136.1 MB in the beginning and 104.2 MB in the end (delta: 31.9 MB). Peak memory consumption was 33.4 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:21,998 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 156.2 MB. Free memory is still 130.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 264.01 ms. Allocated memory is still 156.2 MB. Free memory was 132.4 MB in the beginning and 122.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.86 ms. Allocated memory is still 156.2 MB. Free memory was 122.3 MB in the beginning and 120.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 689.29 ms. Allocated memory is still 156.2 MB. Free memory was 120.5 MB in the beginning and 136.1 MB in the end (delta: -15.6 MB). Peak memory consumption was 18.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1772.73 ms. Allocated memory is still 156.2 MB. Free memory was 136.1 MB in the beginning and 104.2 MB in the end (delta: 31.9 MB). Peak memory consumption was 33.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 10]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible 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 *a = malloc(sizeof(long long)*N); [L30] i=0 [L30] COND TRUE i