/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/condgf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 21:44:48,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 21:44:48,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 21:44:48,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 21:44:48,943 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 21:44:48,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 21:44:48,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 21:44:48,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 21:44:48,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 21:44:48,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 21:44:48,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 21:44:48,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 21:44:48,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 21:44:48,985 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 21:44:48,988 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 21:44:48,990 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 21:44:48,992 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 21:44:48,995 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 21:44:49,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 21:44:49,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 21:44:49,016 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 21:44:49,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 21:44:49,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 21:44:49,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 21:44:49,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 21:44:49,027 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 21:44:49,028 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 21:44:49,029 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 21:44:49,029 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 21:44:49,031 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 21:44:49,031 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 21:44:49,032 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 21:44:49,033 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 21:44:49,034 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 21:44:49,036 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 21:44:49,036 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 21:44:49,037 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 21:44:49,037 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 21:44:49,038 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 21:44:49,039 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 21:44:49,040 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 21:44:49,041 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 21:44:49,054 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 21:44:49,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 21:44:49,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 21:44:49,057 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 21:44:49,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 21:44:49,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 21:44:49,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 21:44:49,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 21:44:49,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 21:44:49,058 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 21:44:49,059 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 21:44:49,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 21:44:49,059 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 21:44:49,059 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 21:44:49,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 21:44:49,060 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 21:44:49,060 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 21:44:49,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 21:44:49,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 21:44:49,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 21:44:49,061 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 21:44:49,062 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 21:44:49,062 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 21:44:49,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 21:44:49,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 21:44:49,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 21:44:49,495 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 21:44:49,496 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 21:44:49,497 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condgf.c [2020-10-23 21:44:49,602 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b379d3456/02d84512ac94435198347796282732d9/FLAG5c1e1383f [2020-10-23 21:44:50,411 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 21:44:50,413 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/condgf.c [2020-10-23 21:44:50,422 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b379d3456/02d84512ac94435198347796282732d9/FLAG5c1e1383f [2020-10-23 21:44:50,731 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b379d3456/02d84512ac94435198347796282732d9 [2020-10-23 21:44:50,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 21:44:50,745 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 21:44:50,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 21:44:50,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 21:44:50,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 21:44:50,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:44:50" (1/1) ... [2020-10-23 21:44:50,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ccd17af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:50, skipping insertion in model container [2020-10-23 21:44:50,759 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:44:50" (1/1) ... [2020-10-23 21:44:50,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 21:44:50,790 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 21:44:50,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:44:50,972 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 21:44:50,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:44:51,014 INFO L208 MainTranslator]: Completed translation [2020-10-23 21:44:51,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:51 WrapperNode [2020-10-23 21:44:51,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 21:44:51,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 21:44:51,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 21:44:51,017 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 21:44:51,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:51" (1/1) ... [2020-10-23 21:44:51,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:51" (1/1) ... [2020-10-23 21:44:51,041 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:51" (1/1) ... [2020-10-23 21:44:51,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:51" (1/1) ... [2020-10-23 21:44:51,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:51" (1/1) ... [2020-10-23 21:44:51,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:51" (1/1) ... [2020-10-23 21:44:51,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:51" (1/1) ... [2020-10-23 21:44:51,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 21:44:51,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 21:44:51,064 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 21:44:51,064 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 21:44:51,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 21:44:51,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 21:44:51,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 21:44:51,156 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 21:44:51,157 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 21:44:51,157 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 21:44:51,157 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 21:44:51,157 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 21:44:51,157 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 21:44:51,158 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 21:44:51,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 21:44:51,158 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 21:44:51,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 21:44:51,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 21:44:51,159 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 21:44:51,159 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 21:44:51,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 21:44:51,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 21:44:51,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 21:44:51,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 21:44:51,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 21:44:51,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 21:44:51,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 21:44:51,576 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 21:44:51,577 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-23 21:44:51,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:44:51 BoogieIcfgContainer [2020-10-23 21:44:51,579 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 21:44:51,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 21:44:51,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 21:44:51,585 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 21:44:51,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:44:50" (1/3) ... [2020-10-23 21:44:51,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@479335f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:44:51, skipping insertion in model container [2020-10-23 21:44:51,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:51" (2/3) ... [2020-10-23 21:44:51,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@479335f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:44:51, skipping insertion in model container [2020-10-23 21:44:51,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:44:51" (3/3) ... [2020-10-23 21:44:51,589 INFO L111 eAbstractionObserver]: Analyzing ICFG condgf.c [2020-10-23 21:44:51,602 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 21:44:51,608 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 21:44:51,624 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 21:44:51,652 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 21:44:51,652 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 21:44:51,653 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 21:44:51,653 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 21:44:51,653 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 21:44:51,653 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 21:44:51,653 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 21:44:51,654 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 21:44:51,674 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-10-23 21:44:51,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-23 21:44:51,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:44:51,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 21:44:51,689 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:44:51,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:44:51,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1465559469, now seen corresponding path program 1 times [2020-10-23 21:44:51,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:44:51,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697946091] [2020-10-23 21:44:51,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:44:51,801 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:44:51,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:44:52,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:44:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:44:52,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-23 21:44:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:44:52,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 21:44:52,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697946091] [2020-10-23 21:44:52,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:44:52,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 21:44:52,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345463281] [2020-10-23 21:44:52,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 21:44:52,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:44:52,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 21:44:52,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 21:44:52,192 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 5 states. [2020-10-23 21:44:52,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:44:52,786 INFO L93 Difference]: Finished difference Result 180 states and 212 transitions. [2020-10-23 21:44:52,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 21:44:52,788 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-10-23 21:44:52,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:44:52,801 INFO L225 Difference]: With dead ends: 180 [2020-10-23 21:44:52,801 INFO L226 Difference]: Without dead ends: 104 [2020-10-23 21:44:52,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-23 21:44:52,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-23 21:44:52,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 76. [2020-10-23 21:44:52,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-23 21:44:52,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2020-10-23 21:44:52,873 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 41 [2020-10-23 21:44:52,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:44:52,874 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2020-10-23 21:44:52,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 21:44:52,875 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2020-10-23 21:44:52,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-23 21:44:52,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:44:52,878 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 21:44:52,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 21:44:52,878 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:44:52,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:44:52,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1462057814, now seen corresponding path program 1 times [2020-10-23 21:44:52,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:44:52,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938715416] [2020-10-23 21:44:52,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:44:53,032 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 21:44:53,034 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:44:53,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 21:44:53,095 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 21:44:53,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 21:44:53,157 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 21:44:53,209 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 21:44:53,210 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 21:44:53,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 21:44:53,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:44:53 BoogieIcfgContainer [2020-10-23 21:44:53,231 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 21:44:53,234 INFO L168 Benchmark]: Toolchain (without parser) took 2492.48 ms. Allocated memory is still 156.2 MB. Free memory was 132.8 MB in the beginning and 103.7 MB in the end (delta: 29.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 8.0 GB. [2020-10-23 21:44:53,235 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 156.2 MB. Free memory is still 130.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 21:44:53,236 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.14 ms. Allocated memory is still 156.2 MB. Free memory was 132.0 MB in the beginning and 122.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 21:44:53,237 INFO L168 Benchmark]: Boogie Preprocessor took 46.60 ms. Allocated memory is still 156.2 MB. Free memory was 122.1 MB in the beginning and 120.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 21:44:53,238 INFO L168 Benchmark]: RCFGBuilder took 515.69 ms. Allocated memory is still 156.2 MB. Free memory was 120.3 MB in the beginning and 132.3 MB in the end (delta: -11.9 MB). Peak memory consumption was 17.2 MB. Max. memory is 8.0 GB. [2020-10-23 21:44:53,238 INFO L168 Benchmark]: TraceAbstraction took 1650.05 ms. Allocated memory is still 156.2 MB. Free memory was 131.8 MB in the beginning and 103.7 MB in the end (delta: 28.1 MB). Peak memory consumption was 28.6 MB. Max. memory is 8.0 GB. [2020-10-23 21:44:53,242 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 156.2 MB. Free memory is still 130.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 266.14 ms. Allocated memory is still 156.2 MB. Free memory was 132.0 MB in the beginning and 122.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 46.60 ms. Allocated memory is still 156.2 MB. Free memory was 122.1 MB in the beginning and 120.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 515.69 ms. Allocated memory is still 156.2 MB. Free memory was 120.3 MB in the beginning and 132.3 MB in the end (delta: -11.9 MB). Peak memory consumption was 17.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1650.05 ms. Allocated memory is still 156.2 MB. Free memory was 131.8 MB in the beginning and 103.7 MB in the end (delta: 28.1 MB). Peak memory consumption was 28.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 0 [L32] i=0 [L32] COND TRUE i