/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/brs4f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 21:44:43,805 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 21:44:43,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 21:44:43,851 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 21:44:43,852 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 21:44:43,856 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 21:44:43,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 21:44:43,869 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 21:44:43,873 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 21:44:43,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 21:44:43,881 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 21:44:43,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 21:44:43,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 21:44:43,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 21:44:43,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 21:44:43,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 21:44:43,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 21:44:43,898 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 21:44:43,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 21:44:43,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 21:44:43,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 21:44:43,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 21:44:43,927 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 21:44:43,930 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 21:44:43,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 21:44:43,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 21:44:43,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 21:44:43,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 21:44:43,953 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 21:44:43,977 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 21:44:43,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 21:44:43,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 21:44:43,983 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 21:44:43,983 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 21:44:43,983 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 21:44:43,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 21:44:43,984 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 21:44:43,984 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 21:44:43,984 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 21:44:43,985 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 21:44:43,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 21:44:43,986 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 21:44:43,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 21:44:43,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 21:44:43,988 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 21:44:43,988 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 21:44:43,988 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 21:44:43,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 21:44:43,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 21:44:43,989 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 21:44:43,989 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 21:44:43,989 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 21:44:44,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 21:44:44,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 21:44:44,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 21:44:44,477 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 21:44:44,478 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 21:44:44,479 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs4f.c [2020-10-23 21:44:44,557 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ac085826/62acc495f72049e38ee4d46feafff689/FLAG0ad378829 [2020-10-23 21:44:45,130 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 21:44:45,131 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs4f.c [2020-10-23 21:44:45,139 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ac085826/62acc495f72049e38ee4d46feafff689/FLAG0ad378829 [2020-10-23 21:44:45,499 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ac085826/62acc495f72049e38ee4d46feafff689 [2020-10-23 21:44:45,502 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 21:44:45,509 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 21:44:45,511 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 21:44:45,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 21:44:45,516 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 21:44:45,517 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:44:45" (1/1) ... [2020-10-23 21:44:45,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79cb84c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:45, skipping insertion in model container [2020-10-23 21:44:45,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:44:45" (1/1) ... [2020-10-23 21:44:45,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 21:44:45,545 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 21:44:45,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:44:45,747 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 21:44:45,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:44:45,786 INFO L208 MainTranslator]: Completed translation [2020-10-23 21:44:45,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:45 WrapperNode [2020-10-23 21:44:45,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 21:44:45,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 21:44:45,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 21:44:45,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 21:44:45,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:45" (1/1) ... [2020-10-23 21:44:45,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:45" (1/1) ... [2020-10-23 21:44:45,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:45" (1/1) ... [2020-10-23 21:44:45,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:45" (1/1) ... [2020-10-23 21:44:45,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:45" (1/1) ... [2020-10-23 21:44:45,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:45" (1/1) ... [2020-10-23 21:44:45,831 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:45" (1/1) ... [2020-10-23 21:44:45,834 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 21:44:45,837 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 21:44:45,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 21:44:45,837 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 21:44:45,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:45" (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 21:44:45,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 21:44:45,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 21:44:45,936 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 21:44:45,937 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 21:44:45,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 21:44:45,937 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 21:44:45,937 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 21:44:45,937 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 21:44:45,938 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 21:44:45,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 21:44:45,938 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 21:44:45,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 21:44:45,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 21:44:45,939 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 21:44:45,939 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 21:44:45,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 21:44:45,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 21:44:45,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 21:44:45,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 21:44:45,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 21:44:45,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 21:44:45,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 21:44:46,481 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 21:44:46,481 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-23 21:44:46,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:44:46 BoogieIcfgContainer [2020-10-23 21:44:46,484 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 21:44:46,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 21:44:46,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 21:44:46,490 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 21:44:46,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:44:45" (1/3) ... [2020-10-23 21:44:46,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2c5fdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:44:46, skipping insertion in model container [2020-10-23 21:44:46,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:44:45" (2/3) ... [2020-10-23 21:44:46,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2c5fdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:44:46, skipping insertion in model container [2020-10-23 21:44:46,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:44:46" (3/3) ... [2020-10-23 21:44:46,493 INFO L111 eAbstractionObserver]: Analyzing ICFG brs4f.c [2020-10-23 21:44:46,506 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 21:44:46,512 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 21:44:46,527 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 21:44:46,555 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 21:44:46,555 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 21:44:46,555 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 21:44:46,555 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 21:44:46,556 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 21:44:46,556 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 21:44:46,556 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 21:44:46,556 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 21:44:46,574 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-10-23 21:44:46,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-23 21:44:46,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:44:46,586 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] [2020-10-23 21:44:46,587 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:44:46,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:44:46,594 INFO L82 PathProgramCache]: Analyzing trace with hash -341341850, now seen corresponding path program 1 times [2020-10-23 21:44:46,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:44:46,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698325738] [2020-10-23 21:44:46,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:44:46,707 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:44:46,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:44:46,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:44:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:44:47,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-23 21:44:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:44:47,014 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 21:44:47,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698325738] [2020-10-23 21:44:47,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:44:47,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 21:44:47,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098454962] [2020-10-23 21:44:47,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 21:44:47,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:44:47,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 21:44:47,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 21:44:47,045 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 3 states. [2020-10-23 21:44:47,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:44:47,229 INFO L93 Difference]: Finished difference Result 111 states and 127 transitions. [2020-10-23 21:44:47,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 21:44:47,231 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-10-23 21:44:47,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:44:47,241 INFO L225 Difference]: With dead ends: 111 [2020-10-23 21:44:47,241 INFO L226 Difference]: Without dead ends: 53 [2020-10-23 21:44:47,245 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 [2020-10-23 21:44:47,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-23 21:44:47,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-10-23 21:44:47,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-23 21:44:47,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2020-10-23 21:44:47,336 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 36 [2020-10-23 21:44:47,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:44:47,338 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2020-10-23 21:44:47,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 21:44:47,339 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2020-10-23 21:44:47,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-23 21:44:47,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:44:47,341 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] [2020-10-23 21:44:47,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 21:44:47,342 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:44:47,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:44:47,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1000671319, now seen corresponding path program 1 times [2020-10-23 21:44:47,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:44:47,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704961779] [2020-10-23 21:44:47,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:44:47,356 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:44:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:44:47,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:44:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:44:47,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-23 21:44:47,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:44:47,516 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 21:44:47,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704961779] [2020-10-23 21:44:47,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:44:47,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 21:44:47,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175032964] [2020-10-23 21:44:47,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 21:44:47,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:44:47,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 21:44:47,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 21:44:47,520 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand 5 states. [2020-10-23 21:44:47,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:44:47,801 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2020-10-23 21:44:47,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 21:44:47,802 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-10-23 21:44:47,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:44:47,804 INFO L225 Difference]: With dead ends: 88 [2020-10-23 21:44:47,804 INFO L226 Difference]: Without dead ends: 62 [2020-10-23 21:44:47,806 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 21:44:47,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-23 21:44:47,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 57. [2020-10-23 21:44:47,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-23 21:44:47,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2020-10-23 21:44:47,822 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 36 [2020-10-23 21:44:47,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:44:47,823 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2020-10-23 21:44:47,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 21:44:47,823 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2020-10-23 21:44:47,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-23 21:44:47,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:44:47,828 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] [2020-10-23 21:44:47,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 21:44:47,829 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:44:47,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:44:47,830 INFO L82 PathProgramCache]: Analyzing trace with hash -546938271, now seen corresponding path program 1 times [2020-10-23 21:44:47,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:44:47,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047915152] [2020-10-23 21:44:47,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:44:47,989 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 21:44:47,992 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:44:48,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 21:44:48,078 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 21:44:48,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 21:44:48,142 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 21:44:48,187 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 21:44:48,189 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 21:44:48,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 21:44:48,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:44:48 BoogieIcfgContainer [2020-10-23 21:44:48,215 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 21:44:48,218 INFO L168 Benchmark]: Toolchain (without parser) took 2712.44 ms. Allocated memory is still 155.2 MB. Free memory was 131.9 MB in the beginning and 98.6 MB in the end (delta: 33.3 MB). Peak memory consumption was 34.1 MB. Max. memory is 8.0 GB. [2020-10-23 21:44:48,219 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 155.2 MB. Free memory was 129.5 MB in the beginning and 129.4 MB in the end (delta: 120.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 21:44:48,220 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.97 ms. Allocated memory is still 155.2 MB. Free memory was 131.3 MB in the beginning and 121.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-23 21:44:48,221 INFO L168 Benchmark]: Boogie Preprocessor took 47.94 ms. Allocated memory is still 155.2 MB. Free memory was 121.5 MB in the beginning and 119.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 21:44:48,222 INFO L168 Benchmark]: RCFGBuilder took 646.71 ms. Allocated memory is still 155.2 MB. Free memory was 119.9 MB in the beginning and 134.2 MB in the end (delta: -14.4 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. [2020-10-23 21:44:48,223 INFO L168 Benchmark]: TraceAbstraction took 1730.03 ms. Allocated memory is still 155.2 MB. Free memory was 133.7 MB in the beginning and 98.6 MB in the end (delta: 35.1 MB). Peak memory consumption was 36.7 MB. Max. memory is 8.0 GB. [2020-10-23 21:44:48,226 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 155.2 MB. Free memory was 129.5 MB in the beginning and 129.4 MB in the end (delta: 120.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 275.97 ms. Allocated memory is still 155.2 MB. Free memory was 131.3 MB in the beginning and 121.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 47.94 ms. Allocated memory is still 155.2 MB. Free memory was 121.5 MB in the beginning and 119.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 646.71 ms. Allocated memory is still 155.2 MB. Free memory was 119.9 MB in the beginning and 134.2 MB in the end (delta: -14.4 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1730.03 ms. Allocated memory is still 155.2 MB. Free memory was 133.7 MB in the beginning and 98.6 MB in the end (delta: 35.1 MB). Peak memory consumption was 36.7 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] i=0 [L31] COND TRUE i