/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/ncompf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 01:56:27,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 01:56:27,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 01:56:27,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 01:56:27,607 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 01:56:27,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 01:56:27,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 01:56:27,622 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 01:56:27,628 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 01:56:27,632 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 01:56:27,633 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 01:56:27,635 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 01:56:27,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 01:56:27,643 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 01:56:27,646 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 01:56:27,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 01:56:27,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 01:56:27,654 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 01:56:27,662 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 01:56:27,665 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 01:56:27,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 01:56:27,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 01:56:27,673 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 01:56:27,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 01:56:27,685 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 01:56:27,686 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 01:56:27,686 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 01:56:27,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 01:56:27,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 01:56:27,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 01:56:27,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 01:56:27,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 01:56:27,695 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 01:56:27,696 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 01:56:27,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 01:56:27,711 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 01:56:27,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 01:56:27,712 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 01:56:27,712 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 01:56:27,713 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 01:56:27,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 01:56:27,715 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 01:56:27,738 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 01:56:27,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 01:56:27,742 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 01:56:27,743 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 01:56:27,743 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 01:56:27,743 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 01:56:27,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 01:56:27,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 01:56:27,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 01:56:27,744 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 01:56:27,745 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 01:56:27,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 01:56:27,745 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 01:56:27,746 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 01:56:27,746 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 01:56:27,746 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 01:56:27,747 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 01:56:27,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 01:56:27,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 01:56:27,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 01:56:27,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 01:56:27,748 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 01:56:27,748 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 01:56:28,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 01:56:28,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 01:56:28,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 01:56:28,218 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 01:56:28,219 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 01:56:28,220 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ncompf.c [2020-11-07 01:56:28,300 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e61c9eab1/f835adb5db644c569815fce814420240/FLAG4947c0528 [2020-11-07 01:56:28,920 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 01:56:28,920 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ncompf.c [2020-11-07 01:56:28,930 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e61c9eab1/f835adb5db644c569815fce814420240/FLAG4947c0528 [2020-11-07 01:56:29,278 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e61c9eab1/f835adb5db644c569815fce814420240 [2020-11-07 01:56:29,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 01:56:29,291 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 01:56:29,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 01:56:29,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 01:56:29,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 01:56:29,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:56:29" (1/1) ... [2020-11-07 01:56:29,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cf0c142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:29, skipping insertion in model container [2020-11-07 01:56:29,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:56:29" (1/1) ... [2020-11-07 01:56:29,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 01:56:29,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 01:56:29,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:56:29,528 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 01:56:29,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:56:29,575 INFO L208 MainTranslator]: Completed translation [2020-11-07 01:56:29,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:29 WrapperNode [2020-11-07 01:56:29,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 01:56:29,577 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 01:56:29,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 01:56:29,577 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 01:56:29,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:29" (1/1) ... [2020-11-07 01:56:29,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:29" (1/1) ... [2020-11-07 01:56:29,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:29" (1/1) ... [2020-11-07 01:56:29,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:29" (1/1) ... [2020-11-07 01:56:29,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:29" (1/1) ... [2020-11-07 01:56:29,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:29" (1/1) ... [2020-11-07 01:56:29,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:29" (1/1) ... [2020-11-07 01:56:29,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 01:56:29,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 01:56:29,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 01:56:29,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 01:56:29,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:29" (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 01:56:29,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 01:56:29,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 01:56:29,718 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 01:56:29,718 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 01:56:29,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 01:56:29,719 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 01:56:29,719 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 01:56:29,719 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 01:56:29,720 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 01:56:29,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 01:56:29,720 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 01:56:29,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 01:56:29,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 01:56:29,721 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 01:56:29,721 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 01:56:29,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 01:56:29,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 01:56:29,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 01:56:29,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 01:56:29,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 01:56:29,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 01:56:29,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 01:56:30,502 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 01:56:30,503 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-07 01:56:30,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:56:30 BoogieIcfgContainer [2020-11-07 01:56:30,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 01:56:30,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 01:56:30,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 01:56:30,513 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 01:56:30,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:56:29" (1/3) ... [2020-11-07 01:56:30,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d70be4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:56:30, skipping insertion in model container [2020-11-07 01:56:30,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:29" (2/3) ... [2020-11-07 01:56:30,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d70be4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:56:30, skipping insertion in model container [2020-11-07 01:56:30,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:56:30" (3/3) ... [2020-11-07 01:56:30,518 INFO L111 eAbstractionObserver]: Analyzing ICFG ncompf.c [2020-11-07 01:56:30,535 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 01:56:30,540 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 01:56:30,556 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 01:56:30,594 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 01:56:30,595 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 01:56:30,595 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 01:56:30,595 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 01:56:30,595 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 01:56:30,595 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 01:56:30,595 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 01:56:30,595 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 01:56:30,613 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-11-07 01:56:30,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-07 01:56:30,625 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:30,626 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] [2020-11-07 01:56:30,626 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:30,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:30,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1716113714, now seen corresponding path program 1 times [2020-11-07 01:56:30,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:30,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556280506] [2020-11-07 01:56:30,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:30,728 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:30,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:30,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:56:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:31,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-11-07 01:56:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:31,059 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 01:56:31,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556280506] [2020-11-07 01:56:31,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:56:31,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 01:56:31,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821638923] [2020-11-07 01:56:31,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 01:56:31,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:56:31,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 01:56:31,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 01:56:31,095 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-11-07 01:56:31,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:56:31,553 INFO L93 Difference]: Finished difference Result 145 states and 165 transitions. [2020-11-07 01:56:31,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 01:56:31,556 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-11-07 01:56:31,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:56:31,580 INFO L225 Difference]: With dead ends: 145 [2020-11-07 01:56:31,580 INFO L226 Difference]: Without dead ends: 75 [2020-11-07 01:56:31,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 01:56:31,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-11-07 01:56:31,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-11-07 01:56:31,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-11-07 01:56:31,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2020-11-07 01:56:31,641 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 46 [2020-11-07 01:56:31,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:56:31,641 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2020-11-07 01:56:31,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 01:56:31,642 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2020-11-07 01:56:31,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-07 01:56:31,644 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:31,644 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] [2020-11-07 01:56:31,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 01:56:31,645 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:31,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:31,646 INFO L82 PathProgramCache]: Analyzing trace with hash 261214925, now seen corresponding path program 1 times [2020-11-07 01:56:31,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:31,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673545680] [2020-11-07 01:56:31,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:31,650 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:31,697 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-11-07 01:56:31,697 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 01:56:31,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 01:56:31,725 WARN L253 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-11-07 01:56:31,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:56:31 BoogieIcfgContainer [2020-11-07 01:56:31,726 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 01:56:31,729 INFO L168 Benchmark]: Toolchain (without parser) took 2441.83 ms. Allocated memory is still 155.2 MB. Free memory was 131.8 MB in the beginning and 81.0 MB in the end (delta: 50.8 MB). Peak memory consumption was 50.9 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:31,730 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 155.2 MB. Free memory is still 131.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 01:56:31,731 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.75 ms. Allocated memory is still 155.2 MB. Free memory was 131.4 MB in the beginning and 121.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:31,732 INFO L168 Benchmark]: Boogie Preprocessor took 48.71 ms. Allocated memory is still 155.2 MB. Free memory was 121.3 MB in the beginning and 119.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:31,733 INFO L168 Benchmark]: RCFGBuilder took 878.93 ms. Allocated memory is still 155.2 MB. Free memory was 119.6 MB in the beginning and 132.9 MB in the end (delta: -13.3 MB). Peak memory consumption was 18.4 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:31,734 INFO L168 Benchmark]: TraceAbstraction took 1216.60 ms. Allocated memory is still 155.2 MB. Free memory was 132.4 MB in the beginning and 81.0 MB in the end (delta: 51.4 MB). Peak memory consumption was 51.4 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:31,738 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 155.2 MB. Free memory is still 131.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 283.75 ms. Allocated memory is still 155.2 MB. Free memory was 131.4 MB in the beginning and 121.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 48.71 ms. Allocated memory is still 155.2 MB. Free memory was 121.3 MB in the beginning and 119.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 878.93 ms. Allocated memory is still 155.2 MB. Free memory was 119.6 MB in the beginning and 132.9 MB in the end (delta: -13.3 MB). Peak memory consumption was 18.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1216.60 ms. Allocated memory is still 155.2 MB. Free memory was 132.4 MB in the beginning and 81.0 MB in the end (delta: 51.4 MB). Peak memory consumption was 51.4 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); [L29] long long *b = malloc(sizeof(long long)*N); [L30] long long *c = malloc(sizeof(long long)*N); [L32] a[0] = 6 [L33] b[0] = 1 [L34] c[0] = 0 [L35] i=1 [L35] COND FALSE !(i