/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/nsqmf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 01:56:29,367 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 01:56:29,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 01:56:29,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 01:56:29,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 01:56:29,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 01:56:29,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 01:56:29,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 01:56:29,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 01:56:29,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 01:56:29,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 01:56:29,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 01:56:29,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 01:56:29,426 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 01:56:29,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 01:56:29,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 01:56:29,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 01:56:29,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 01:56:29,443 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 01:56:29,445 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 01:56:29,447 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 01:56:29,449 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 01:56:29,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 01:56:29,451 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 01:56:29,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 01:56:29,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 01:56:29,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 01:56:29,456 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 01:56:29,457 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 01:56:29,458 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 01:56:29,458 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 01:56:29,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 01:56:29,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 01:56:29,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 01:56:29,462 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 01:56:29,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 01:56:29,464 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 01:56:29,464 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 01:56:29,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 01:56:29,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 01:56:29,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 01:56:29,468 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 01:56:29,480 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 01:56:29,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 01:56:29,482 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 01:56:29,483 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 01:56:29,483 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 01:56:29,483 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 01:56:29,483 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 01:56:29,484 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 01:56:29,484 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 01:56:29,484 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 01:56:29,484 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 01:56:29,485 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 01:56:29,485 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 01:56:29,485 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 01:56:29,486 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 01:56:29,486 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 01:56:29,486 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 01:56:29,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 01:56:29,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 01:56:29,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 01:56:29,487 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 01:56:29,487 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 01:56:29,488 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 01:56:29,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 01:56:29,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 01:56:29,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 01:56:29,916 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 01:56:29,917 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 01:56:29,918 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/nsqmf.c [2020-11-07 01:56:30,011 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6483ce20/1d1b3c0a0ff24ef79c583dd16e2a3c49/FLAG3e126b74a [2020-11-07 01:56:30,694 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 01:56:30,695 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/nsqmf.c [2020-11-07 01:56:30,705 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6483ce20/1d1b3c0a0ff24ef79c583dd16e2a3c49/FLAG3e126b74a [2020-11-07 01:56:31,063 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6483ce20/1d1b3c0a0ff24ef79c583dd16e2a3c49 [2020-11-07 01:56:31,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 01:56:31,079 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 01:56:31,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 01:56:31,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 01:56:31,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 01:56:31,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:56:31" (1/1) ... [2020-11-07 01:56:31,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b7ef86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:31, skipping insertion in model container [2020-11-07 01:56:31,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:56:31" (1/1) ... [2020-11-07 01:56:31,103 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 01:56:31,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 01:56:31,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:56:31,316 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 01:56:31,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:56:31,360 INFO L208 MainTranslator]: Completed translation [2020-11-07 01:56:31,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:31 WrapperNode [2020-11-07 01:56:31,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 01:56:31,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 01:56:31,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 01:56:31,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 01:56:31,379 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:31" (1/1) ... [2020-11-07 01:56:31,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:31" (1/1) ... [2020-11-07 01:56:31,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:31" (1/1) ... [2020-11-07 01:56:31,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:31" (1/1) ... [2020-11-07 01:56:31,399 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:31" (1/1) ... [2020-11-07 01:56:31,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:31" (1/1) ... [2020-11-07 01:56:31,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:31" (1/1) ... [2020-11-07 01:56:31,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 01:56:31,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 01:56:31,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 01:56:31,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 01:56:31,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 01:56:31,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 01:56:31,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 01:56:31,499 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 01:56:31,499 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 01:56:31,499 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 01:56:31,499 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 01:56:31,500 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 01:56:31,500 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 01:56:31,500 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 01:56:31,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 01:56:31,500 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 01:56:31,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 01:56:31,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 01:56:31,501 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 01:56:31,501 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 01:56:31,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 01:56:31,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 01:56:31,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 01:56:31,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 01:56:31,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 01:56:31,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 01:56:31,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 01:56:32,088 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 01:56:32,089 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-11-07 01:56:32,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:56:32 BoogieIcfgContainer [2020-11-07 01:56:32,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 01:56:32,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 01:56:32,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 01:56:32,100 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 01:56:32,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:56:31" (1/3) ... [2020-11-07 01:56:32,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cb42113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:56:32, skipping insertion in model container [2020-11-07 01:56:32,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:31" (2/3) ... [2020-11-07 01:56:32,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cb42113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:56:32, skipping insertion in model container [2020-11-07 01:56:32,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:56:32" (3/3) ... [2020-11-07 01:56:32,106 INFO L111 eAbstractionObserver]: Analyzing ICFG nsqmf.c [2020-11-07 01:56:32,124 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 01:56:32,129 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 01:56:32,142 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 01:56:32,176 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 01:56:32,177 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 01:56:32,177 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 01:56:32,177 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 01:56:32,177 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 01:56:32,177 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 01:56:32,178 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 01:56:32,178 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 01:56:32,200 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-11-07 01:56:32,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-07 01:56:32,211 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:32,212 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 01:56:32,213 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:32,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:32,223 INFO L82 PathProgramCache]: Analyzing trace with hash 396138475, now seen corresponding path program 1 times [2020-11-07 01:56:32,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:32,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115682819] [2020-11-07 01:56:32,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:32,330 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:32,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:32,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:56:32,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:32,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-11-07 01:56:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:32,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 01:56:32,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115682819] [2020-11-07 01:56:32,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:56:32,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 01:56:32,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046641298] [2020-11-07 01:56:32,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 01:56:32,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:56:32,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 01:56:32,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 01:56:32,715 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 3 states. [2020-11-07 01:56:32,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:56:32,962 INFO L93 Difference]: Finished difference Result 119 states and 135 transitions. [2020-11-07 01:56:32,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 01:56:32,964 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-11-07 01:56:32,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:56:32,974 INFO L225 Difference]: With dead ends: 119 [2020-11-07 01:56:32,974 INFO L226 Difference]: Without dead ends: 62 [2020-11-07 01:56:32,979 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 [2020-11-07 01:56:32,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-11-07 01:56:33,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-11-07 01:56:33,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-11-07 01:56:33,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2020-11-07 01:56:33,034 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 41 [2020-11-07 01:56:33,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:56:33,035 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2020-11-07 01:56:33,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 01:56:33,035 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2020-11-07 01:56:33,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-07 01:56:33,039 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:33,039 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 01:56:33,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 01:56:33,040 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:33,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:33,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1876757282, now seen corresponding path program 1 times [2020-11-07 01:56:33,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:33,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937379917] [2020-11-07 01:56:33,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:33,051 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:33,083 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-11-07 01:56:33,083 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 01:56:33,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 01:56:33,110 WARN L253 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-11-07 01:56:33,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:56:33 BoogieIcfgContainer [2020-11-07 01:56:33,111 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 01:56:33,113 INFO L168 Benchmark]: Toolchain (without parser) took 2038.79 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 83.9 MB in the end (delta: 43.1 MB). Peak memory consumption was 43.6 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:33,114 INFO L168 Benchmark]: CDTParser took 1.02 ms. Allocated memory is still 151.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 01:56:33,115 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.89 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 115.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:33,116 INFO L168 Benchmark]: Boogie Preprocessor took 47.51 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 114.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:33,117 INFO L168 Benchmark]: RCFGBuilder took 680.71 ms. Allocated memory is still 151.0 MB. Free memory was 114.3 MB in the beginning and 131.1 MB in the end (delta: -16.8 MB). Peak memory consumption was 20.5 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:33,118 INFO L168 Benchmark]: TraceAbstraction took 1014.40 ms. Allocated memory is still 151.0 MB. Free memory was 130.6 MB in the beginning and 83.9 MB in the end (delta: 46.7 MB). Peak memory consumption was 46.1 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:33,123 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.02 ms. Allocated memory is still 151.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 277.89 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 115.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 47.51 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 114.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 680.71 ms. Allocated memory is still 151.0 MB. Free memory was 114.3 MB in the beginning and 131.1 MB in the end (delta: -16.8 MB). Peak memory consumption was 20.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1014.40 ms. Allocated memory is still 151.0 MB. Free memory was 130.6 MB in the beginning and 83.9 MB in the end (delta: 46.7 MB). Peak memory consumption was 46.1 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); [L29] long long *b = malloc(sizeof(long long)*N); [L31] b[0] = 1 [L32] a[0] = 1 [L34] i=1 [L34] COND FALSE !(i