/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/loop-lit/jm2006_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 02:09:25,449 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 02:09:25,452 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 02:09:25,493 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 02:09:25,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 02:09:25,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 02:09:25,510 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 02:09:25,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 02:09:25,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 02:09:25,514 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 02:09:25,531 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 02:09:25,534 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 02:09:25,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 02:09:25,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 02:09:25,540 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 02:09:25,541 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 02:09:25,545 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 02:09:25,557 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 02:09:25,558 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 02:09:25,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 02:09:25,560 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 02:09:25,574 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 02:09:25,574 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 02:09:25,576 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 02:09:25,577 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 02:09:25,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 02:09:25,577 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 02:09:25,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 02:09:25,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 02:09:25,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 02:09:25,578 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 02:09:25,579 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 02:09:25,579 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 02:09:25,579 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 02:09:25,579 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 02:09:25,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 02:09:25,580 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 02:09:25,580 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 02:09:25,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 02:09:25,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 02:09:25,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 02:09:25,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 02:09:25,582 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 02:09:25,582 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 02:09:25,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 02:09:26,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 02:09:26,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 02:09:26,025 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 02:09:26,025 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 02:09:26,027 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006_variant.i [2020-11-07 02:09:26,124 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c98dc662/2a01b08bc53b4fbab968b880f7bcc8c4/FLAGc905d870b [2020-11-07 02:09:26,912 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 02:09:26,913 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006_variant.i [2020-11-07 02:09:26,923 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c98dc662/2a01b08bc53b4fbab968b880f7bcc8c4/FLAGc905d870b [2020-11-07 02:09:27,236 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c98dc662/2a01b08bc53b4fbab968b880f7bcc8c4 [2020-11-07 02:09:27,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 02:09:27,251 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 02:09:27,257 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 02:09:27,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 02:09:27,262 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 02:09:27,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:09:27" (1/1) ... [2020-11-07 02:09:27,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f6048d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:27, skipping insertion in model container [2020-11-07 02:09:27,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:09:27" (1/1) ... [2020-11-07 02:09:27,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 02:09:27,295 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 02:09:27,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:09:27,495 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 02:09:27,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:09:27,537 INFO L208 MainTranslator]: Completed translation [2020-11-07 02:09:27,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:27 WrapperNode [2020-11-07 02:09:27,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 02:09:27,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 02:09:27,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 02:09:27,539 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 02:09:27,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:27" (1/1) ... [2020-11-07 02:09:27,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:27" (1/1) ... [2020-11-07 02:09:27,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:27" (1/1) ... [2020-11-07 02:09:27,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:27" (1/1) ... [2020-11-07 02:09:27,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:27" (1/1) ... [2020-11-07 02:09:27,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:27" (1/1) ... [2020-11-07 02:09:27,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:27" (1/1) ... [2020-11-07 02:09:27,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 02:09:27,582 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 02:09:27,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 02:09:27,582 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 02:09:27,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:27" (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 02:09:27,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 02:09:27,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 02:09:27,683 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 02:09:27,683 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 02:09:27,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 02:09:27,683 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 02:09:27,684 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 02:09:27,684 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 02:09:27,684 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-07 02:09:27,684 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-07 02:09:27,684 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 02:09:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 02:09:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 02:09:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 02:09:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 02:09:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 02:09:27,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 02:09:27,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 02:09:27,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 02:09:27,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 02:09:27,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 02:09:27,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 02:09:28,148 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 02:09:28,148 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 02:09:28,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:09:28 BoogieIcfgContainer [2020-11-07 02:09:28,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 02:09:28,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 02:09:28,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 02:09:28,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 02:09:28,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:09:27" (1/3) ... [2020-11-07 02:09:28,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7393f9ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:09:28, skipping insertion in model container [2020-11-07 02:09:28,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:27" (2/3) ... [2020-11-07 02:09:28,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7393f9ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:09:28, skipping insertion in model container [2020-11-07 02:09:28,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:09:28" (3/3) ... [2020-11-07 02:09:28,163 INFO L111 eAbstractionObserver]: Analyzing ICFG jm2006_variant.i [2020-11-07 02:09:28,182 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 02:09:28,187 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 02:09:28,200 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 02:09:28,229 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 02:09:28,230 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 02:09:28,230 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 02:09:28,230 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 02:09:28,230 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 02:09:28,230 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 02:09:28,231 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 02:09:28,231 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 02:09:28,250 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2020-11-07 02:09:28,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-07 02:09:28,261 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:09:28,262 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] [2020-11-07 02:09:28,263 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:09:28,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:09:28,270 INFO L82 PathProgramCache]: Analyzing trace with hash -513592731, now seen corresponding path program 1 times [2020-11-07 02:09:28,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:09:28,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87596863] [2020-11-07 02:09:28,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:09:28,374 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:09:28,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:09:28,628 WARN L194 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-11-07 02:09:28,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:09:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:09:28,689 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 02:09:28,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87596863] [2020-11-07 02:09:28,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:09:28,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 02:09:28,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772915217] [2020-11-07 02:09:28,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 02:09:28,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:09:28,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 02:09:28,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 02:09:28,742 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 3 states. [2020-11-07 02:09:28,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:09:28,857 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-11-07 02:09:28,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 02:09:28,859 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-11-07 02:09:28,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:09:28,869 INFO L225 Difference]: With dead ends: 68 [2020-11-07 02:09:28,869 INFO L226 Difference]: Without dead ends: 40 [2020-11-07 02:09:28,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 02:09:28,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-07 02:09:28,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-11-07 02:09:28,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-07 02:09:28,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2020-11-07 02:09:28,946 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 32 [2020-11-07 02:09:28,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:09:28,946 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2020-11-07 02:09:28,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 02:09:28,947 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2020-11-07 02:09:28,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-07 02:09:28,948 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:09:28,948 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] [2020-11-07 02:09:28,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 02:09:28,949 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:09:28,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:09:28,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1790330064, now seen corresponding path program 1 times [2020-11-07 02:09:28,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:09:28,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573419213] [2020-11-07 02:09:28,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:09:28,955 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:09:28,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:09:29,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:09:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:09:29,296 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 02:09:29,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573419213] [2020-11-07 02:09:29,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:09:29,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-07 02:09:29,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203224647] [2020-11-07 02:09:29,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 02:09:29,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:09:29,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 02:09:29,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-07 02:09:29,301 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 10 states. [2020-11-07 02:09:29,873 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-11-07 02:09:30,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:09:30,099 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2020-11-07 02:09:30,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-07 02:09:30,100 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-11-07 02:09:30,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:09:30,102 INFO L225 Difference]: With dead ends: 51 [2020-11-07 02:09:30,103 INFO L226 Difference]: Without dead ends: 43 [2020-11-07 02:09:30,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-11-07 02:09:30,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-07 02:09:30,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2020-11-07 02:09:30,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-07 02:09:30,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-11-07 02:09:30,132 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 32 [2020-11-07 02:09:30,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:09:30,133 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-11-07 02:09:30,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 02:09:30,133 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-11-07 02:09:30,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-07 02:09:30,135 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:09:30,135 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] [2020-11-07 02:09:30,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 02:09:30,136 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:09:30,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:09:30,137 INFO L82 PathProgramCache]: Analyzing trace with hash -880041004, now seen corresponding path program 1 times [2020-11-07 02:09:30,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:09:30,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060367001] [2020-11-07 02:09:30,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:09:30,668 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-11-07 02:09:32,824 INFO L316 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-11-07 02:09:32,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:09:33,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:09:33,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:09:33,422 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 02:09:33,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060367001] [2020-11-07 02:09:33,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:09:33,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-11-07 02:09:33,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328715100] [2020-11-07 02:09:33,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-07 02:09:33,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:09:33,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-07 02:09:33,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2020-11-07 02:09:33,635 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 17 states. [2020-11-07 02:09:34,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:09:34,978 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2020-11-07 02:09:34,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-07 02:09:34,979 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 40 [2020-11-07 02:09:34,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:09:34,981 INFO L225 Difference]: With dead ends: 43 [2020-11-07 02:09:34,981 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 02:09:34,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=196, Invalid=1136, Unknown=0, NotChecked=0, Total=1332 [2020-11-07 02:09:34,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 02:09:34,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 02:09:34,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 02:09:34,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 02:09:34,985 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2020-11-07 02:09:34,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:09:34,986 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 02:09:34,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-07 02:09:34,986 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 02:09:34,986 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 02:09:34,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 02:09:34,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 02:09:35,357 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2020-11-07 02:09:35,954 WARN L194 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 31 [2020-11-07 02:09:36,080 INFO L262 CegarLoopResult]: At program point reach_errorEXIT(line 12) the Hoare annotation is: (= __VERIFIER_assert_~cond 0) [2020-11-07 02:09:36,081 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-11-07 02:09:36,081 INFO L269 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-11-07 02:09:36,081 INFO L262 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: (= __VERIFIER_assert_~cond 0) [2020-11-07 02:09:36,081 INFO L262 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: (= __VERIFIER_assert_~cond 0) [2020-11-07 02:09:36,082 INFO L262 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) the Hoare annotation is: (= __VERIFIER_assert_~cond 0) [2020-11-07 02:09:36,082 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 02:09:36,082 INFO L269 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-11-07 02:09:36,082 INFO L269 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2020-11-07 02:09:36,082 INFO L269 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-11-07 02:09:36,082 INFO L269 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-11-07 02:09:36,083 INFO L269 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-11-07 02:09:36,083 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-11-07 02:09:36,083 INFO L269 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-11-07 02:09:36,083 INFO L269 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-11-07 02:09:36,083 INFO L269 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-11-07 02:09:36,083 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 02:09:36,083 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-07 02:09:36,083 INFO L269 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-11-07 02:09:36,084 INFO L266 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-11-07 02:09:36,084 INFO L266 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-11-07 02:09:36,084 INFO L266 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-11-07 02:09:36,084 INFO L266 CegarLoopResult]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2020-11-07 02:09:36,084 INFO L266 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-11-07 02:09:36,084 INFO L262 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (and (<= 0 main_~i~0) (<= main_~i~0 main_~x~0) (<= main_~x~0 main_~i~0)) [2020-11-07 02:09:36,084 INFO L262 CegarLoopResult]: At program point L33-2(lines 33 37) the Hoare annotation is: (and (not (= (+ main_~x~0 1) 0)) (<= 0 main_~i~0)) [2020-11-07 02:09:36,085 INFO L262 CegarLoopResult]: At program point L33-3(lines 24 42) the Hoare annotation is: (or (and (<= 0 main_~i~0) (= main_~x~0 0)) (let ((.cse0 (+ main_~y~0 main_~i~0)) (.cse1 (+ main_~x~0 main_~j~0))) (and (or (<= (+ main_~y~0 main_~z~0) 0) (<= .cse0 main_~j~0)) (<= .cse1 .cse0) (or (< 0 (+ main_~y~0 main_~z~0 1)) (<= main_~j~0 .cse0)) (<= .cse0 .cse1) (<= main_~i~0 main_~x~0) (= main_~z~0 0) (<= main_~x~0 main_~i~0)))) [2020-11-07 02:09:36,085 INFO L262 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (<= 0 main_~i~0) [2020-11-07 02:09:36,085 INFO L269 CegarLoopResult]: At program point L29-1(line 29) the Hoare annotation is: true [2020-11-07 02:09:36,085 INFO L269 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: true [2020-11-07 02:09:36,085 INFO L269 CegarLoopResult]: At program point L27-1(line 27) the Hoare annotation is: true [2020-11-07 02:09:36,085 INFO L269 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: true [2020-11-07 02:09:36,085 INFO L269 CegarLoopResult]: At program point L27-2(line 27) the Hoare annotation is: true [2020-11-07 02:09:36,085 INFO L269 CegarLoopResult]: At program point mainEXIT(lines 24 42) the Hoare annotation is: true [2020-11-07 02:09:36,086 INFO L269 CegarLoopResult]: At program point mainFINAL(lines 24 42) the Hoare annotation is: true [2020-11-07 02:09:36,086 INFO L269 CegarLoopResult]: At program point L38(lines 38 40) the Hoare annotation is: true [2020-11-07 02:09:36,086 INFO L262 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: (and (not (= (+ main_~x~0 1) 0)) (<= 0 main_~i~0)) [2020-11-07 02:09:36,086 INFO L262 CegarLoopResult]: At program point L36-1(line 36) the Hoare annotation is: (and (= |main_#t~post6| main_~z~0) (not (= (+ main_~x~0 1) 0)) (<= 0 main_~i~0)) [2020-11-07 02:09:36,086 INFO L262 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (and (not (= (+ main_~x~0 1) 0)) (<= 0 main_~i~0) (not (= main_~x~0 0))) [2020-11-07 02:09:36,087 INFO L262 CegarLoopResult]: At program point L36-2(line 36) the Hoare annotation is: (and (= main_~z~0 (+ |main_#t~post6| 1)) (not (= (+ main_~x~0 1) 0)) (<= 0 main_~i~0)) [2020-11-07 02:09:36,087 INFO L262 CegarLoopResult]: At program point L34-1(line 34) the Hoare annotation is: (and (= |main_#t~post5| main_~x~0) (not (= (+ main_~x~0 1) 0)) (<= 0 main_~i~0) (not (= main_~x~0 0))) [2020-11-07 02:09:36,087 INFO L262 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: (let ((.cse1 (+ main_~y~0 main_~i~0)) (.cse0 (+ main_~x~0 main_~j~0))) (and (<= .cse0 .cse1) (<= 0 main_~i~0) (<= .cse1 .cse0) (<= main_~i~0 main_~x~0) (<= main_~x~0 main_~i~0))) [2020-11-07 02:09:36,087 INFO L262 CegarLoopResult]: At program point L34-2(line 34) the Hoare annotation is: (and (= |main_#t~post5| (+ main_~x~0 1)) (<= 0 main_~i~0) (not (= |main_#t~post5| 0))) [2020-11-07 02:09:36,087 INFO L262 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (<= 0 main_~i~0) [2020-11-07 02:09:36,088 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 24 42) the Hoare annotation is: true [2020-11-07 02:09:36,088 INFO L269 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: true [2020-11-07 02:09:36,088 INFO L269 CegarLoopResult]: At program point L28-1(line 28) the Hoare annotation is: true [2020-11-07 02:09:36,088 INFO L269 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: true [2020-11-07 02:09:36,088 INFO L269 CegarLoopResult]: At program point L26-1(line 26) the Hoare annotation is: true [2020-11-07 02:09:36,089 INFO L269 CegarLoopResult]: At program point L26-2(line 26) the Hoare annotation is: true [2020-11-07 02:09:36,089 INFO L262 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: (or (and (or (<= (+ main_~y~0 main_~z~0) 0) (<= (+ main_~y~0 main_~i~0 main_~z~0) main_~j~0)) (or (< 0 (+ main_~y~0 main_~z~0 1)) (<= main_~j~0 (+ main_~i~0 main_~y~0 main_~z~0))) (<= 0 main_~i~0) (= main_~x~0 0)) (let ((.cse1 (+ main_~y~0 main_~i~0)) (.cse0 (+ main_~x~0 main_~j~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (<= main_~y~0 0) (<= main_~i~0 main_~x~0) (<= 0 main_~y~0) (= main_~z~0 0) (<= main_~x~0 main_~i~0)))) [2020-11-07 02:09:36,089 INFO L262 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (and (not (= (+ main_~x~0 1) 0)) (<= 0 main_~i~0)) [2020-11-07 02:09:36,089 INFO L269 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2020-11-07 02:09:36,089 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-11-07 02:09:36,090 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: true [2020-11-07 02:09:36,090 INFO L262 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (and (= |__VERIFIER_assert_#in~cond| 0) (or (and (not (<= (+ main_~y~0 main_~i~0 main_~z~0) main_~j~0)) (not (<= (+ main_~y~0 main_~z~0) 0))) (and (not (< 0 (+ main_~y~0 main_~z~0 1))) (not (<= main_~j~0 (+ main_~i~0 main_~y~0 main_~z~0)))))) [2020-11-07 02:09:36,090 INFO L262 CegarLoopResult]: At program point L18(lines 18 20) the Hoare annotation is: (and (let ((.cse1 (+ main_~y~0 main_~z~0))) (let ((.cse0 (<= .cse1 0))) (or (and .cse0 (<= 0 .cse1)) (and (not (<= (+ main_~y~0 main_~i~0 main_~z~0) main_~j~0)) (not .cse0)) (and (not (< 0 (+ main_~y~0 main_~z~0 1))) (not (<= main_~j~0 (+ main_~i~0 main_~y~0 main_~z~0))))))) (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0)))) [2020-11-07 02:09:36,090 INFO L262 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: (and (= |__VERIFIER_assert_#in~cond| 0) (or (and (not (<= (+ main_~y~0 main_~i~0 main_~z~0) main_~j~0)) (not (<= (+ main_~y~0 main_~z~0) 0))) (and (not (< 0 (+ main_~y~0 main_~z~0 1))) (not (<= main_~j~0 (+ main_~i~0 main_~y~0 main_~z~0)))))) [2020-11-07 02:09:36,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:09:36 BoogieIcfgContainer [2020-11-07 02:09:36,112 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 02:09:36,116 INFO L168 Benchmark]: Toolchain (without parser) took 8868.63 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 130.7 MB in the beginning and 96.7 MB in the end (delta: 33.9 MB). Peak memory consumption was 100.5 MB. Max. memory is 8.0 GB. [2020-11-07 02:09:36,117 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 154.1 MB. Free memory was 128.4 MB in the beginning and 128.4 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 02:09:36,118 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.30 ms. Allocated memory is still 154.1 MB. Free memory was 130.0 MB in the beginning and 120.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-07 02:09:36,119 INFO L168 Benchmark]: Boogie Preprocessor took 41.83 ms. Allocated memory is still 154.1 MB. Free memory was 120.4 MB in the beginning and 119.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-07 02:09:36,120 INFO L168 Benchmark]: RCFGBuilder took 569.28 ms. Allocated memory is still 154.1 MB. Free memory was 119.0 MB in the beginning and 135.1 MB in the end (delta: -16.2 MB). Peak memory consumption was 18.1 MB. Max. memory is 8.0 GB. [2020-11-07 02:09:36,121 INFO L168 Benchmark]: TraceAbstraction took 7959.51 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 134.5 MB in the beginning and 96.7 MB in the end (delta: 37.8 MB). Peak memory consumption was 103.4 MB. Max. memory is 8.0 GB. [2020-11-07 02:09:36,125 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 154.1 MB. Free memory was 128.4 MB in the beginning and 128.4 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 281.30 ms. Allocated memory is still 154.1 MB. Free memory was 130.0 MB in the beginning and 120.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.83 ms. Allocated memory is still 154.1 MB. Free memory was 120.4 MB in the beginning and 119.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 569.28 ms. Allocated memory is still 154.1 MB. Free memory was 119.0 MB in the beginning and 135.1 MB in the end (delta: -16.2 MB). Peak memory consumption was 18.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7959.51 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 134.5 MB in the beginning and 96.7 MB in the end (delta: 37.8 MB). Peak memory consumption was 103.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: !(x + 1 == 0) && 0 <= i - ProcedureContractResult [Line: 12]: Procedure Contract for reach_error Derived contract for procedure reach_error: cond == 0 - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 118 SDtfs, 143 SDslu, 189 SDs, 0 SdLazy, 410 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 53 LocationsWithAnnotation, 77 PreInvPairs, 93 NumberOfFragments, 446 HoareAnnotationTreeSize, 77 FomulaSimplifications, 320 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 53 FomulaSimplificationsInter, 1338 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...