/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/eqn4f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 01:56:08,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 01:56:08,773 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 01:56:08,831 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 01:56:08,832 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 01:56:08,837 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 01:56:08,840 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 01:56:08,849 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 01:56:08,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 01:56:08,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 01:56:08,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 01:56:08,860 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 01:56:08,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 01:56:08,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 01:56:08,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 01:56:08,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 01:56:08,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 01:56:08,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 01:56:08,882 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 01:56:08,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 01:56:08,903 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 01:56:08,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 01:56:08,907 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 01:56:08,908 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 01:56:08,911 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 01:56:08,920 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 01:56:08,921 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 01:56:08,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 01:56:08,924 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 01:56:08,925 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 01:56:08,926 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 01:56:08,926 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 01:56:08,927 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 01:56:08,927 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 01:56:08,928 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 01:56:08,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 01:56:08,930 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 01:56:08,954 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 01:56:08,954 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 01:56:08,959 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 01:56:08,960 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 01:56:08,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 01:56:08,960 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 01:56:08,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 01:56:08,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 01:56:08,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 01:56:08,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 01:56:08,962 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 01:56:08,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 01:56:08,963 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 01:56:08,963 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 01:56:08,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 01:56:08,963 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 01:56:08,964 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 01:56:08,964 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 01:56:08,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 01:56:08,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 01:56:08,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 01:56:08,965 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 01:56:08,965 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 01:56:09,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 01:56:09,399 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 01:56:09,403 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 01:56:09,404 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 01:56:09,405 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 01:56:09,410 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/eqn4f.c [2020-11-07 01:56:09,485 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/258f1474f/4c54836e3ed24bfba9ca21efa6159408/FLAG362faa943 [2020-11-07 01:56:10,088 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 01:56:10,089 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/eqn4f.c [2020-11-07 01:56:10,097 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/258f1474f/4c54836e3ed24bfba9ca21efa6159408/FLAG362faa943 [2020-11-07 01:56:10,487 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/258f1474f/4c54836e3ed24bfba9ca21efa6159408 [2020-11-07 01:56:10,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 01:56:10,499 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 01:56:10,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 01:56:10,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 01:56:10,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 01:56:10,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:56:10" (1/1) ... [2020-11-07 01:56:10,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a7e2df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:10, skipping insertion in model container [2020-11-07 01:56:10,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:56:10" (1/1) ... [2020-11-07 01:56:10,531 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 01:56:10,550 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 01:56:10,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:56:10,735 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 01:56:10,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:56:10,774 INFO L208 MainTranslator]: Completed translation [2020-11-07 01:56:10,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:10 WrapperNode [2020-11-07 01:56:10,775 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 01:56:10,776 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 01:56:10,776 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 01:56:10,776 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 01:56:10,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:10" (1/1) ... [2020-11-07 01:56:10,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:10" (1/1) ... [2020-11-07 01:56:10,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:10" (1/1) ... [2020-11-07 01:56:10,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:10" (1/1) ... [2020-11-07 01:56:10,807 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:10" (1/1) ... [2020-11-07 01:56:10,813 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:10" (1/1) ... [2020-11-07 01:56:10,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:10" (1/1) ... [2020-11-07 01:56:10,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 01:56:10,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 01:56:10,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 01:56:10,819 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 01:56:10,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:10" (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 01:56:10,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 01:56:10,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 01:56:10,906 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 01:56:10,906 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 01:56:10,906 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 01:56:10,906 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 01:56:10,906 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 01:56:10,907 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 01:56:10,907 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 01:56:10,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 01:56:10,907 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 01:56:10,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 01:56:10,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 01:56:10,908 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 01:56:10,908 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 01:56:10,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 01:56:10,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 01:56:10,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 01:56:10,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 01:56:10,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 01:56:10,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 01:56:10,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 01:56:11,343 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 01:56:11,343 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-11-07 01:56:11,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:56:11 BoogieIcfgContainer [2020-11-07 01:56:11,346 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 01:56:11,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 01:56:11,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 01:56:11,352 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 01:56:11,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:56:10" (1/3) ... [2020-11-07 01:56:11,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55c846a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:56:11, skipping insertion in model container [2020-11-07 01:56:11,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:10" (2/3) ... [2020-11-07 01:56:11,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55c846a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:56:11, skipping insertion in model container [2020-11-07 01:56:11,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:56:11" (3/3) ... [2020-11-07 01:56:11,356 INFO L111 eAbstractionObserver]: Analyzing ICFG eqn4f.c [2020-11-07 01:56:11,376 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 01:56:11,380 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 01:56:11,407 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 01:56:11,451 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 01:56:11,451 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 01:56:11,452 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 01:56:11,452 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 01:56:11,452 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 01:56:11,452 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 01:56:11,452 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 01:56:11,452 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 01:56:11,489 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-11-07 01:56:11,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-07 01:56:11,502 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:11,504 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] [2020-11-07 01:56:11,504 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:11,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:11,516 INFO L82 PathProgramCache]: Analyzing trace with hash 396138475, now seen corresponding path program 1 times [2020-11-07 01:56:11,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:11,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878940906] [2020-11-07 01:56:11,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:11,622 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:11,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:11,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:56:11,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:11,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-11-07 01:56:11,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:11,973 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 01:56:11,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878940906] [2020-11-07 01:56:11,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:56:11,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 01:56:11,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232424064] [2020-11-07 01:56:11,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 01:56:11,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:56:11,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 01:56:11,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 01:56:12,001 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 3 states. [2020-11-07 01:56:12,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:56:12,191 INFO L93 Difference]: Finished difference Result 119 states and 135 transitions. [2020-11-07 01:56:12,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 01:56:12,193 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-11-07 01:56:12,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:56:12,202 INFO L225 Difference]: With dead ends: 119 [2020-11-07 01:56:12,203 INFO L226 Difference]: Without dead ends: 62 [2020-11-07 01:56:12,207 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 01:56:12,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-11-07 01:56:12,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-11-07 01:56:12,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-11-07 01:56:12,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2020-11-07 01:56:12,260 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 41 [2020-11-07 01:56:12,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:56:12,261 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2020-11-07 01:56:12,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 01:56:12,261 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2020-11-07 01:56:12,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-07 01:56:12,263 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:12,263 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] [2020-11-07 01:56:12,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 01:56:12,264 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:12,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:12,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1876757282, now seen corresponding path program 1 times [2020-11-07 01:56:12,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:12,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170019594] [2020-11-07 01:56:12,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:12,269 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:12,295 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-11-07 01:56:12,298 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 01:56:12,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 01:56:12,321 WARN L253 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-11-07 01:56:12,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:56:12 BoogieIcfgContainer [2020-11-07 01:56:12,322 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 01:56:12,324 INFO L168 Benchmark]: Toolchain (without parser) took 1829.45 ms. Allocated memory is still 156.2 MB. Free memory was 132.7 MB in the beginning and 91.2 MB in the end (delta: 41.5 MB). Peak memory consumption was 42.5 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:12,325 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 156.2 MB. Free memory was 130.0 MB in the beginning and 129.8 MB in the end (delta: 211.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 01:56:12,326 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.85 ms. Allocated memory is still 156.2 MB. Free memory was 132.0 MB in the beginning and 122.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:12,328 INFO L168 Benchmark]: Boogie Preprocessor took 41.88 ms. Allocated memory is still 156.2 MB. Free memory was 122.3 MB in the beginning and 120.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:12,328 INFO L168 Benchmark]: RCFGBuilder took 527.19 ms. Allocated memory is still 156.2 MB. Free memory was 120.6 MB in the beginning and 137.9 MB in the end (delta: -17.4 MB). Peak memory consumption was 21.5 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:12,329 INFO L168 Benchmark]: TraceAbstraction took 973.91 ms. Allocated memory is still 156.2 MB. Free memory was 137.8 MB in the beginning and 91.2 MB in the end (delta: 46.6 MB). Peak memory consumption was 47.2 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:12,333 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 156.2 MB. Free memory was 130.0 MB in the beginning and 129.8 MB in the end (delta: 211.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 270.85 ms. Allocated memory is still 156.2 MB. Free memory was 132.0 MB in the beginning and 122.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.88 ms. Allocated memory is still 156.2 MB. Free memory was 122.3 MB in the beginning and 120.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 527.19 ms. Allocated memory is still 156.2 MB. Free memory was 120.6 MB in the beginning and 137.9 MB in the end (delta: -17.4 MB). Peak memory consumption was 21.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 973.91 ms. Allocated memory is still 156.2 MB. Free memory was 137.8 MB in the beginning and 91.2 MB in the end (delta: 46.6 MB). Peak memory consumption was 47.2 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); [L31] a[0] = 8 [L32] b[0] = 0 [L33] i=1 [L33] COND FALSE !(i