/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/sina4f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 21:45:30,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 21:45:30,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 21:45:30,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 21:45:30,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 21:45:30,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 21:45:30,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 21:45:30,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 21:45:30,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 21:45:30,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 21:45:30,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 21:45:30,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 21:45:30,863 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 21:45:30,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 21:45:30,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 21:45:30,867 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 21:45:30,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 21:45:30,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 21:45:30,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 21:45:30,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 21:45:30,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 21:45:30,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 21:45:30,894 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 21:45:30,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 21:45:30,925 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 21:45:30,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 21:45:30,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 21:45:30,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 21:45:30,945 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 21:45:30,967 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 21:45:30,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 21:45:30,972 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 21:45:30,973 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 21:45:30,973 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 21:45:30,973 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 21:45:30,973 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 21:45:30,973 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 21:45:30,974 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 21:45:30,974 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 21:45:30,975 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 21:45:30,975 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 21:45:30,975 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 21:45:30,975 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 21:45:30,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 21:45:30,977 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 21:45:30,977 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 21:45:30,977 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 21:45:30,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 21:45:30,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 21:45:30,978 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 21:45:30,978 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 21:45:30,978 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 21:45:31,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 21:45:31,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 21:45:31,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 21:45:31,417 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 21:45:31,418 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 21:45:31,419 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina4f.c [2020-10-23 21:45:31,509 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b05bc07db/32422b9ae8ea431d9aeeb05ac81e1e32/FLAG1ab188f3a [2020-10-23 21:45:32,232 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 21:45:32,233 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sina4f.c [2020-10-23 21:45:32,244 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b05bc07db/32422b9ae8ea431d9aeeb05ac81e1e32/FLAG1ab188f3a [2020-10-23 21:45:32,560 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b05bc07db/32422b9ae8ea431d9aeeb05ac81e1e32 [2020-10-23 21:45:32,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 21:45:32,572 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 21:45:32,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 21:45:32,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 21:45:32,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 21:45:32,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:45:32" (1/1) ... [2020-10-23 21:45:32,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a07e3a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:32, skipping insertion in model container [2020-10-23 21:45:32,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:45:32" (1/1) ... [2020-10-23 21:45:32,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 21:45:32,610 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 21:45:32,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:45:32,901 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 21:45:32,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:45:32,954 INFO L208 MainTranslator]: Completed translation [2020-10-23 21:45:32,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:32 WrapperNode [2020-10-23 21:45:32,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 21:45:32,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 21:45:32,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 21:45:32,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 21:45:32,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:32" (1/1) ... [2020-10-23 21:45:32,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:32" (1/1) ... [2020-10-23 21:45:32,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:32" (1/1) ... [2020-10-23 21:45:32,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:32" (1/1) ... [2020-10-23 21:45:32,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:32" (1/1) ... [2020-10-23 21:45:32,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:32" (1/1) ... [2020-10-23 21:45:32,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:32" (1/1) ... [2020-10-23 21:45:33,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 21:45:33,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 21:45:33,002 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 21:45:33,002 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 21:45:33,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:32" (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 21:45:33,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 21:45:33,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 21:45:33,093 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 21:45:33,093 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 21:45:33,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 21:45:33,094 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 21:45:33,094 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 21:45:33,094 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 21:45:33,094 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 21:45:33,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 21:45:33,094 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 21:45:33,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 21:45:33,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 21:45:33,095 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 21:45:33,095 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 21:45:33,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 21:45:33,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 21:45:33,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 21:45:33,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 21:45:33,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 21:45:33,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 21:45:33,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 21:45:33,537 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 21:45:33,538 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 21:45:33,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:45:33 BoogieIcfgContainer [2020-10-23 21:45:33,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 21:45:33,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 21:45:33,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 21:45:33,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 21:45:33,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:45:32" (1/3) ... [2020-10-23 21:45:33,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57c67f11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:45:33, skipping insertion in model container [2020-10-23 21:45:33,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:32" (2/3) ... [2020-10-23 21:45:33,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57c67f11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:45:33, skipping insertion in model container [2020-10-23 21:45:33,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:45:33" (3/3) ... [2020-10-23 21:45:33,550 INFO L111 eAbstractionObserver]: Analyzing ICFG sina4f.c [2020-10-23 21:45:33,565 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 21:45:33,570 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 21:45:33,585 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 21:45:33,612 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 21:45:33,613 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 21:45:33,613 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 21:45:33,613 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 21:45:33,613 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 21:45:33,613 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 21:45:33,613 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 21:45:33,614 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 21:45:33,635 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-10-23 21:45:33,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-23 21:45:33,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:45:33,649 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] [2020-10-23 21:45:33,650 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:45:33,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:45:33,657 INFO L82 PathProgramCache]: Analyzing trace with hash -926049567, now seen corresponding path program 1 times [2020-10-23 21:45:33,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:45:33,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149974278] [2020-10-23 21:45:33,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:45:33,759 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:45:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:34,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:45:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:34,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-23 21:45:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:34,087 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 21:45:34,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149974278] [2020-10-23 21:45:34,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:45:34,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 21:45:34,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870851920] [2020-10-23 21:45:34,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 21:45:34,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:45:34,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 21:45:34,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 21:45:34,120 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 3 states. [2020-10-23 21:45:34,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:45:34,496 INFO L93 Difference]: Finished difference Result 155 states and 179 transitions. [2020-10-23 21:45:34,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 21:45:34,498 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2020-10-23 21:45:34,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:45:34,516 INFO L225 Difference]: With dead ends: 155 [2020-10-23 21:45:34,517 INFO L226 Difference]: Without dead ends: 78 [2020-10-23 21:45:34,524 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 21:45:34,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-23 21:45:34,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-10-23 21:45:34,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-23 21:45:34,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2020-10-23 21:45:34,622 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 45 [2020-10-23 21:45:34,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:45:34,623 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2020-10-23 21:45:34,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 21:45:34,623 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2020-10-23 21:45:34,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-23 21:45:34,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:45:34,630 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] [2020-10-23 21:45:34,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 21:45:34,631 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:45:34,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:45:34,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1114083972, now seen corresponding path program 1 times [2020-10-23 21:45:34,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:45:34,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95504048] [2020-10-23 21:45:34,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:45:34,645 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:45:34,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:34,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:45:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:34,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-23 21:45:34,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:34,828 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 21:45:34,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95504048] [2020-10-23 21:45:34,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:45:34,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 21:45:34,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926075670] [2020-10-23 21:45:34,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 21:45:34,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:45:34,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 21:45:34,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 21:45:34,831 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand 5 states. [2020-10-23 21:45:35,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:45:35,156 INFO L93 Difference]: Finished difference Result 153 states and 165 transitions. [2020-10-23 21:45:35,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 21:45:35,157 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-10-23 21:45:35,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:45:35,160 INFO L225 Difference]: With dead ends: 153 [2020-10-23 21:45:35,160 INFO L226 Difference]: Without dead ends: 110 [2020-10-23 21:45:35,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-23 21:45:35,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-23 21:45:35,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 82. [2020-10-23 21:45:35,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-23 21:45:35,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2020-10-23 21:45:35,181 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 45 [2020-10-23 21:45:35,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:45:35,182 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2020-10-23 21:45:35,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 21:45:35,182 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2020-10-23 21:45:35,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-23 21:45:35,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:45:35,185 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 21:45:35,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 21:45:35,185 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:45:35,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:45:35,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1411727209, now seen corresponding path program 1 times [2020-10-23 21:45:35,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:45:35,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086247643] [2020-10-23 21:45:35,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:45:35,326 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 21:45:35,328 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:45:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 21:45:35,420 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 21:45:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 21:45:35,521 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 21:45:35,597 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 21:45:35,599 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 21:45:35,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 21:45:35,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:45:35 BoogieIcfgContainer [2020-10-23 21:45:35,639 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 21:45:35,645 INFO L168 Benchmark]: Toolchain (without parser) took 3074.03 ms. Allocated memory is still 151.0 MB. Free memory was 127.4 MB in the beginning and 60.5 MB in the end (delta: 66.9 MB). Peak memory consumption was 68.0 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:35,646 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 126.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 21:45:35,650 INFO L168 Benchmark]: CACSL2BoogieTranslator took 381.15 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 116.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:35,651 INFO L168 Benchmark]: Boogie Preprocessor took 44.29 ms. Allocated memory is still 151.0 MB. Free memory was 116.8 MB in the beginning and 115.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:35,652 INFO L168 Benchmark]: RCFGBuilder took 538.79 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 125.7 MB in the end (delta: -10.7 MB). Peak memory consumption was 17.5 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:35,653 INFO L168 Benchmark]: TraceAbstraction took 2096.93 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 60.5 MB in the end (delta: 64.6 MB). Peak memory consumption was 65.2 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:35,664 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 126.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 381.15 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 116.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.29 ms. Allocated memory is still 151.0 MB. Free memory was 116.8 MB in the beginning and 115.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 538.79 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 125.7 MB in the end (delta: -10.7 MB). Peak memory consumption was 17.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2096.93 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 60.5 MB in the end (delta: 64.6 MB). Peak memory consumption was 65.2 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] long long *a = malloc(sizeof(long long)*N); [L30] long long *b = malloc(sizeof(long long)*N); [L32] sum[0] = 0 [L33] i=0 [L33] COND TRUE i