/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/ms1f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 01:56:24,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 01:56:24,620 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 01:56:24,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 01:56:24,667 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 01:56:24,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 01:56:24,671 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 01:56:24,673 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 01:56:24,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 01:56:24,677 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 01:56:24,699 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 01:56:24,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 01:56:24,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 01:56:24,710 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 01:56:24,711 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 01:56:24,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 01:56:24,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 01:56:24,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 01:56:24,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 01:56:24,732 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 01:56:24,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 01:56:24,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 01:56:24,742 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 01:56:24,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 01:56:24,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 01:56:24,751 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 01:56:24,752 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 01:56:24,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 01:56:24,753 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 01:56:24,755 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 01:56:24,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 01:56:24,756 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 01:56:24,756 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 01:56:24,756 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 01:56:24,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 01:56:24,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 01:56:24,759 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 01:56:24,771 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 01:56:24,772 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 01:56:24,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 01:56:24,774 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 01:56:24,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 01:56:24,774 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 01:56:24,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 01:56:24,775 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 01:56:24,775 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 01:56:24,775 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 01:56:24,776 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 01:56:24,776 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 01:56:24,776 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 01:56:24,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 01:56:24,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 01:56:24,777 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 01:56:24,778 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 01:56:24,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 01:56:24,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 01:56:24,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 01:56:24,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 01:56:24,779 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 01:56:24,779 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 01:56:25,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 01:56:25,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 01:56:25,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 01:56:25,230 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 01:56:25,231 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 01:56:25,232 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ms1f.c [2020-11-07 01:56:25,322 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62cd6a710/984b6d91714241088fbfd2e5a1bf2316/FLAG3089d52a9 [2020-11-07 01:56:26,009 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 01:56:26,010 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ms1f.c [2020-11-07 01:56:26,018 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62cd6a710/984b6d91714241088fbfd2e5a1bf2316/FLAG3089d52a9 [2020-11-07 01:56:26,369 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62cd6a710/984b6d91714241088fbfd2e5a1bf2316 [2020-11-07 01:56:26,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 01:56:26,382 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 01:56:26,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 01:56:26,389 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 01:56:26,393 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 01:56:26,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:56:26" (1/1) ... [2020-11-07 01:56:26,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a07e3a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:26, skipping insertion in model container [2020-11-07 01:56:26,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:56:26" (1/1) ... [2020-11-07 01:56:26,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 01:56:26,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 01:56:26,607 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:56:26,619 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 01:56:26,665 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:56:26,690 INFO L208 MainTranslator]: Completed translation [2020-11-07 01:56:26,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:26 WrapperNode [2020-11-07 01:56:26,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 01:56:26,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 01:56:26,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 01:56:26,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 01:56:26,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:26" (1/1) ... [2020-11-07 01:56:26,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:26" (1/1) ... [2020-11-07 01:56:26,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:26" (1/1) ... [2020-11-07 01:56:26,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:26" (1/1) ... [2020-11-07 01:56:26,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:26" (1/1) ... [2020-11-07 01:56:26,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:26" (1/1) ... [2020-11-07 01:56:26,731 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:26" (1/1) ... [2020-11-07 01:56:26,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 01:56:26,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 01:56:26,735 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 01:56:26,735 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 01:56:26,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:26" (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 01:56:26,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 01:56:26,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 01:56:26,862 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 01:56:26,862 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 01:56:26,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 01:56:26,862 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 01:56:26,863 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 01:56:26,863 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 01:56:26,863 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 01:56:26,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 01:56:26,863 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 01:56:26,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 01:56:26,864 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 01:56:26,864 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 01:56:26,864 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 01:56:26,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 01:56:26,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 01:56:26,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 01:56:26,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 01:56:26,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 01:56:26,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 01:56:26,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 01:56:27,316 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 01:56:27,317 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-11-07 01:56:27,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:56:27 BoogieIcfgContainer [2020-11-07 01:56:27,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 01:56:27,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 01:56:27,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 01:56:27,325 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 01:56:27,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:56:26" (1/3) ... [2020-11-07 01:56:27,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7342d2eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:56:27, skipping insertion in model container [2020-11-07 01:56:27,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:26" (2/3) ... [2020-11-07 01:56:27,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7342d2eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:56:27, skipping insertion in model container [2020-11-07 01:56:27,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:56:27" (3/3) ... [2020-11-07 01:56:27,329 INFO L111 eAbstractionObserver]: Analyzing ICFG ms1f.c [2020-11-07 01:56:27,349 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 01:56:27,353 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 01:56:27,367 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 01:56:27,394 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 01:56:27,394 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 01:56:27,394 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 01:56:27,394 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 01:56:27,395 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 01:56:27,395 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 01:56:27,395 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 01:56:27,395 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 01:56:27,414 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-11-07 01:56:27,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-07 01:56:27,426 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:27,427 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] [2020-11-07 01:56:27,427 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:27,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:27,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1978426860, now seen corresponding path program 1 times [2020-11-07 01:56:27,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:27,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029298028] [2020-11-07 01:56:27,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:27,541 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:27,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:27,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:56:27,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:27,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-11-07 01:56:27,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:27,926 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 01:56:27,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029298028] [2020-11-07 01:56:27,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:56:27,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 01:56:27,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651692411] [2020-11-07 01:56:27,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 01:56:27,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:56:27,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 01:56:27,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 01:56:27,957 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 3 states. [2020-11-07 01:56:28,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:56:28,230 INFO L93 Difference]: Finished difference Result 114 states and 128 transitions. [2020-11-07 01:56:28,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 01:56:28,232 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-11-07 01:56:28,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:56:28,240 INFO L225 Difference]: With dead ends: 114 [2020-11-07 01:56:28,241 INFO L226 Difference]: Without dead ends: 58 [2020-11-07 01:56:28,245 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 01:56:28,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-07 01:56:28,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-11-07 01:56:28,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-07 01:56:28,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2020-11-07 01:56:28,297 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 43 [2020-11-07 01:56:28,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:56:28,298 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2020-11-07 01:56:28,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 01:56:28,299 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2020-11-07 01:56:28,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-07 01:56:28,300 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:28,301 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] [2020-11-07 01:56:28,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 01:56:28,301 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:28,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:28,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1403761419, now seen corresponding path program 1 times [2020-11-07 01:56:28,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:28,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245228767] [2020-11-07 01:56:28,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:28,305 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:28,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:28,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:56:28,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:28,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-11-07 01:56:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:28,452 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 01:56:28,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245228767] [2020-11-07 01:56:28,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:56:28,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 01:56:28,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742899397] [2020-11-07 01:56:28,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 01:56:28,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:56:28,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 01:56:28,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-07 01:56:28,458 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 5 states. [2020-11-07 01:56:28,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:56:28,669 INFO L93 Difference]: Finished difference Result 85 states and 91 transitions. [2020-11-07 01:56:28,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 01:56:28,670 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-11-07 01:56:28,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:56:28,672 INFO L225 Difference]: With dead ends: 85 [2020-11-07 01:56:28,672 INFO L226 Difference]: Without dead ends: 66 [2020-11-07 01:56:28,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-07 01:56:28,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-07 01:56:28,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 61. [2020-11-07 01:56:28,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-11-07 01:56:28,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2020-11-07 01:56:28,688 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 43 [2020-11-07 01:56:28,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:56:28,689 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2020-11-07 01:56:28,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 01:56:28,689 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2020-11-07 01:56:28,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-07 01:56:28,691 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:28,691 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] [2020-11-07 01:56:28,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 01:56:28,692 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:28,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:28,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1589882434, now seen corresponding path program 1 times [2020-11-07 01:56:28,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:28,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369540445] [2020-11-07 01:56:28,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:28,773 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 01:56:28,775 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:28,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 01:56:28,807 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 01:56:28,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 01:56:28,872 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 01:56:28,939 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 01:56:28,939 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 01:56:28,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 01:56:28,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:56:28 BoogieIcfgContainer [2020-11-07 01:56:28,965 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 01:56:28,971 INFO L168 Benchmark]: Toolchain (without parser) took 2589.87 ms. Allocated memory is still 164.6 MB. Free memory was 120.9 MB in the beginning and 86.5 MB in the end (delta: 34.4 MB). Peak memory consumption was 33.5 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:28,973 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 164.6 MB. Free memory is still 137.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 01:56:28,976 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.68 ms. Allocated memory is still 164.6 MB. Free memory was 120.3 MB in the beginning and 110.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:28,979 INFO L168 Benchmark]: Boogie Preprocessor took 40.73 ms. Allocated memory is still 164.6 MB. Free memory was 110.0 MB in the beginning and 108.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:28,979 INFO L168 Benchmark]: RCFGBuilder took 584.77 ms. Allocated memory is still 164.6 MB. Free memory was 108.3 MB in the beginning and 130.2 MB in the end (delta: -21.9 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:28,981 INFO L168 Benchmark]: TraceAbstraction took 1643.38 ms. Allocated memory is still 164.6 MB. Free memory was 129.9 MB in the beginning and 86.5 MB in the end (delta: 43.4 MB). Peak memory consumption was 43.4 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:28,991 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 164.6 MB. Free memory is still 137.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 303.68 ms. Allocated memory is still 164.6 MB. Free memory was 120.3 MB in the beginning and 110.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.73 ms. Allocated memory is still 164.6 MB. Free memory was 110.0 MB in the beginning and 108.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 584.77 ms. Allocated memory is still 164.6 MB. Free memory was 108.3 MB in the beginning and 130.2 MB in the end (delta: -21.9 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1643.38 ms. Allocated memory is still 164.6 MB. Free memory was 129.9 MB in the beginning and 86.5 MB in the end (delta: 43.4 MB). Peak memory consumption was 43.4 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] int sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 [L31] COND TRUE i