/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/indp2f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 21:45:00,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 21:45:00,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 21:45:00,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 21:45:00,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 21:45:00,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 21:45:00,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 21:45:00,515 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 21:45:00,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 21:45:00,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 21:45:00,528 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 21:45:00,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 21:45:00,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 21:45:00,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 21:45:00,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 21:45:00,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 21:45:00,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 21:45:00,549 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 21:45:00,550 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 21:45:00,550 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 21:45:00,552 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 21:45:00,571 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 21:45:00,571 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 21:45:00,573 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 21:45:00,573 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 21:45:00,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 21:45:00,573 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 21:45:00,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 21:45:00,574 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 21:45:00,574 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 21:45:00,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 21:45:00,574 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 21:45:00,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 21:45:00,575 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 21:45:00,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 21:45:00,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 21:45:00,575 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 21:45:00,576 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 21:45:00,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 21:45:00,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 21:45:00,576 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 21:45:00,576 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 21:45:00,577 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 21:45:00,577 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 21:45:00,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 21:45:00,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 21:45:00,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 21:45:00,955 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 21:45:00,955 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 21:45:00,956 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp2f.c [2020-10-23 21:45:01,032 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54f43599f/69a5c542e44b4b8586d80fc6cf4de878/FLAG36d241667 [2020-10-23 21:45:01,711 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 21:45:01,712 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/indp2f.c [2020-10-23 21:45:01,719 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54f43599f/69a5c542e44b4b8586d80fc6cf4de878/FLAG36d241667 [2020-10-23 21:45:02,090 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54f43599f/69a5c542e44b4b8586d80fc6cf4de878 [2020-10-23 21:45:02,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 21:45:02,106 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 21:45:02,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 21:45:02,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 21:45:02,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 21:45:02,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:45:02" (1/1) ... [2020-10-23 21:45:02,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@119d8062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:02, skipping insertion in model container [2020-10-23 21:45:02,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:45:02" (1/1) ... [2020-10-23 21:45:02,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 21:45:02,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 21:45:02,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:45:02,318 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 21:45:02,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:45:02,359 INFO L208 MainTranslator]: Completed translation [2020-10-23 21:45:02,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:02 WrapperNode [2020-10-23 21:45:02,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 21:45:02,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 21:45:02,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 21:45:02,361 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 21:45:02,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:02" (1/1) ... [2020-10-23 21:45:02,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:02" (1/1) ... [2020-10-23 21:45:02,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:02" (1/1) ... [2020-10-23 21:45:02,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:02" (1/1) ... [2020-10-23 21:45:02,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:02" (1/1) ... [2020-10-23 21:45:02,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:02" (1/1) ... [2020-10-23 21:45:02,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:02" (1/1) ... [2020-10-23 21:45:02,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 21:45:02,404 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 21:45:02,404 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 21:45:02,404 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 21:45:02,405 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:02" (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 21:45:02,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 21:45:02,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 21:45:02,492 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 21:45:02,493 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 21:45:02,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 21:45:02,493 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 21:45:02,493 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 21:45:02,493 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 21:45:02,494 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 21:45:02,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 21:45:02,494 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 21:45:02,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 21:45:02,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 21:45:02,495 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 21:45:02,495 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 21:45:02,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 21:45:02,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 21:45:02,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 21:45:02,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 21:45:02,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 21:45:02,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 21:45:02,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 21:45:02,988 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 21:45:02,989 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-23 21:45:02,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:45:02 BoogieIcfgContainer [2020-10-23 21:45:02,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 21:45:02,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 21:45:02,993 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 21:45:02,996 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 21:45:02,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:45:02" (1/3) ... [2020-10-23 21:45:02,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22507aa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:45:02, skipping insertion in model container [2020-10-23 21:45:02,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:45:02" (2/3) ... [2020-10-23 21:45:02,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22507aa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:45:02, skipping insertion in model container [2020-10-23 21:45:02,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:45:02" (3/3) ... [2020-10-23 21:45:03,000 INFO L111 eAbstractionObserver]: Analyzing ICFG indp2f.c [2020-10-23 21:45:03,011 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 21:45:03,017 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 21:45:03,030 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 21:45:03,056 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 21:45:03,056 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 21:45:03,056 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 21:45:03,056 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 21:45:03,056 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 21:45:03,056 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 21:45:03,057 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 21:45:03,057 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 21:45:03,072 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-10-23 21:45:03,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-23 21:45:03,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:45:03,085 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] [2020-10-23 21:45:03,085 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:45:03,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:45:03,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1087441824, now seen corresponding path program 1 times [2020-10-23 21:45:03,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:45:03,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556414515] [2020-10-23 21:45:03,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:45:03,182 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:45:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:03,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:45:03,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:03,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-23 21:45:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:03,430 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 21:45:03,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556414515] [2020-10-23 21:45:03,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:45:03,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 21:45:03,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025660233] [2020-10-23 21:45:03,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 21:45:03,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:45:03,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 21:45:03,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 21:45:03,460 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 3 states. [2020-10-23 21:45:03,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:45:03,754 INFO L93 Difference]: Finished difference Result 119 states and 139 transitions. [2020-10-23 21:45:03,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 21:45:03,757 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-10-23 21:45:03,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:45:03,766 INFO L225 Difference]: With dead ends: 119 [2020-10-23 21:45:03,766 INFO L226 Difference]: Without dead ends: 62 [2020-10-23 21:45:03,770 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 21:45:03,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-23 21:45:03,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-10-23 21:45:03,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-23 21:45:03,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2020-10-23 21:45:03,825 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 39 [2020-10-23 21:45:03,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:45:03,826 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2020-10-23 21:45:03,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 21:45:03,826 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2020-10-23 21:45:03,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-23 21:45:03,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:45:03,829 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] [2020-10-23 21:45:03,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 21:45:03,829 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:45:03,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:45:03,830 INFO L82 PathProgramCache]: Analyzing trace with hash 2019697356, now seen corresponding path program 1 times [2020-10-23 21:45:03,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:45:03,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584324241] [2020-10-23 21:45:03,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:45:03,834 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:45:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:04,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:45:04,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:04,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-23 21:45:04,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:45:04,096 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 21:45:04,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584324241] [2020-10-23 21:45:04,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:45:04,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 21:45:04,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871590318] [2020-10-23 21:45:04,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 21:45:04,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:45:04,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 21:45:04,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 21:45:04,101 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand 5 states. [2020-10-23 21:45:04,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:45:04,518 INFO L93 Difference]: Finished difference Result 115 states and 124 transitions. [2020-10-23 21:45:04,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 21:45:04,519 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-10-23 21:45:04,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:45:04,523 INFO L225 Difference]: With dead ends: 115 [2020-10-23 21:45:04,523 INFO L226 Difference]: Without dead ends: 84 [2020-10-23 21:45:04,525 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 21:45:04,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-23 21:45:04,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 65. [2020-10-23 21:45:04,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-23 21:45:04,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2020-10-23 21:45:04,546 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 39 [2020-10-23 21:45:04,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:45:04,546 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2020-10-23 21:45:04,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 21:45:04,547 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2020-10-23 21:45:04,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-23 21:45:04,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:45:04,549 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] [2020-10-23 21:45:04,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 21:45:04,550 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:45:04,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:45:04,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1397964890, now seen corresponding path program 1 times [2020-10-23 21:45:04,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:45:04,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102468958] [2020-10-23 21:45:04,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:45:04,713 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 21:45:04,715 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:45:04,735 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-23 21:45:04,735 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 21:45:04,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 21:45:04,757 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-23 21:45:04,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:45:04 BoogieIcfgContainer [2020-10-23 21:45:04,758 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 21:45:04,761 INFO L168 Benchmark]: Toolchain (without parser) took 2659.22 ms. Allocated memory was 164.6 MB in the beginning and 218.1 MB in the end (delta: 53.5 MB). Free memory was 140.8 MB in the beginning and 153.8 MB in the end (delta: -13.0 MB). Peak memory consumption was 42.0 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:04,762 INFO L168 Benchmark]: CDTParser took 0.92 ms. Allocated memory is still 164.6 MB. Free memory is still 138.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 21:45:04,763 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.70 ms. Allocated memory is still 164.6 MB. Free memory was 140.3 MB in the beginning and 130.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:04,764 INFO L168 Benchmark]: Boogie Preprocessor took 42.31 ms. Allocated memory is still 164.6 MB. Free memory was 130.5 MB in the beginning and 128.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:04,765 INFO L168 Benchmark]: RCFGBuilder took 587.34 ms. Allocated memory is still 164.6 MB. Free memory was 128.7 MB in the beginning and 144.9 MB in the end (delta: -16.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:04,766 INFO L168 Benchmark]: TraceAbstraction took 1765.20 ms. Allocated memory was 164.6 MB in the beginning and 218.1 MB in the end (delta: 53.5 MB). Free memory was 144.4 MB in the beginning and 153.8 MB in the end (delta: -9.4 MB). Peak memory consumption was 44.1 MB. Max. memory is 8.0 GB. [2020-10-23 21:45:04,771 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.92 ms. Allocated memory is still 164.6 MB. Free memory is still 138.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 249.70 ms. Allocated memory is still 164.6 MB. Free memory was 140.3 MB in the beginning and 130.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.31 ms. Allocated memory is still 164.6 MB. Free memory was 130.5 MB in the beginning and 128.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 587.34 ms. Allocated memory is still 164.6 MB. Free memory was 128.7 MB in the beginning and 144.9 MB in the end (delta: -16.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1765.20 ms. Allocated memory was 164.6 MB in the beginning and 218.1 MB in the end (delta: 53.5 MB). Free memory was 144.4 MB in the beginning and 153.8 MB in the end (delta: -9.4 MB). Peak memory consumption was 44.1 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); [L30] i=0 [L30] COND TRUE i